CMA OHIO MUNICIPAL MONEY FUND OF CMA MULTI STATE MUN SERS TR
N-30D, 1994-11-15
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CMA

CMA Ohio
Municipal Money Fund


Semi-Annual Report






September 30, 1994


Merrill Lynch Bull Logo




This report is not authorized for use as an offer
of sale or a solicitation of an offer to buy shares
of the Fund unless accompanied or preceded by the Fund's 
current prospectus. Past performance results shown in this 
report should not be considered a representation of future 
performance, which will fluctuate. The Fund seeks to maintain 
a consistent $1.00 net asset value per share, although this 
cannot be assured. An investment in the Fund is neither
insured nor guaranteed by the US Government.







CMA Ohio
Municipal Money Fund
Box 9011
Princeton, NJ 08543-9011
<PAGE>



TO OUR SHAREHOLDERS:


For the six month period ended September 30, 1994, CMA Ohio
Municipal Money Fund paid shareholders a net annualized yield of
2.19%*. As of September 30, 1994, the Fund's 7-day yield was 2.73%.

The Environment
Concerns of increasing inflationary pressures continued to prompt
volatility in the US stock and bond markets during the July--
September period. In addition, the weakness of the US dollar in
foreign exchange markets caused intermittent stock and bond market
declines during the period. While the immediate concerns regarding
the US dollar had diminished by late July, the possibility of
continued tightening by the Federal Reserve Board persisted for most
of the period. However, a lower-than-expected rate of growth
reported for the US economy during the second calendar quarter
allayed inflationary concerns to some degree, despite the fifth
increase this year in short-term interest rates made by the central
bank in mid-August. Inflationary expectations surfaced again with
the announcement of significant upward revision in industrial
production and capacity utilization for the May--July period. When
the central bank did not raise short-term interest rates at the late
September Federal Open Market Committee meeting, financial markets
rallied on the expectation that the US economy was not overheating
and therefore significant further monetary policy tightening would
not be necessary.

Despite the stronger-than-expected industrial production results,
other economic data suggest that while the economic recovery is
continuing, it is losing some momentum. Consumer spending is
increasing, but at a relatively slow pace, and existing home sales
may have peaked. Inflation remains subdued at the retail level. In
the industrial sector, the sharp increase in manufacturing
production in August was largely the result of a strong increase in
motor vehicle assemblies, which may level off in the weeks ahead. On
balance, it appears that the growth in US industry is progressing at
a steady, modest rate.


[FN]
*Based on a constant investment throughout the period, with
dividends compounded daily, and reflecting a net return to the
investor after all expenses.
<PAGE>

Despite evidence of a moderating trend in the US economy, Chairman
Greenspan indicated in his July Humphrey-Hawkins testimony that the
central bank would prefer to err on the side of too much monetary
tightening rather than too little. In the weeks ahead, investors
will continue to assess economic data and inflationary trends in
order to gauge whether further increases in short-term interest
rates are imminent. Continued indications of moderate and
sustainable levels of economic growth would be positive for the US
capital markets.

Investment Outlook and Strategy
During the six-month period ended September 30, 1994, the US economy
continued to surprise the marketplace with its resiliency.
Manufacturing provided a strong catalyst for growth, and continued
strength in housing and automobile sales also provided the impetus
for the Federal Reserve Board to continue the restrictive monetary
policy initiated in February. This was accomplished by raising the
Federal Funds rate by 25 basis points (0.25%) to 3.75% in April,
with more aggressive 50 basis point increases in May and August to
its current rate of 4.75%. In addition, the Federal Reserve Board
raised the discount rate by 50 basis points in both May and August.
Additionally, during the period the yield on the one-year US
Treasury bill rose approximately 155 points to 5.95% by September
30, 1994.

Economic growth in the State of Ohio continued at a strong pace
during the six months ended September 30, 1994. Efforts to diversify
the State's economic base into trade and service sectors continued
unabated with positive results. In addition, the manufacturing
sector, led by automobile production, has been a stellar performer
during the current national expansion. The auto manufacturers
continued to record profits restricted only by capacity limitations
and seasonal plant closings. Employment, a beneficiary of the
economic growth, has been a positive for the State with the
seasonally adjusted unemployment rate at 5.5%, slightly below the
national average of 5.9% for September 1994. However, future
economic growth remains a question as the Federal Reserve Board
continues to increase short-term interest rates to quell
inflationary pressures.

Positive economic growth combined with prudent fiscal management by
the Voinovich Administration enabled the State to finish the 1994
fiscal year with a general fund balance of $560 million. This
allowed the State to replenish its budget stabilization (or rainy
day) fund with $260 million. For the first quarter of fiscal year
1995, tax receipts are running slightly ahead of 1994, but slightly
below original budget estimates. Positive economic conditions
translating into positive revenue flows enabled the State to manage
daily operations without the need to borrow in the short-term
market. The various Ohio municipalities, however, increased their
short-term issuance approximately 124% to a modest $464 million over
the comparable period last year, the majority of which continued to
be issued with one-year maturities. Yields on AA-rated one-year
notes increased from the 3.40% range at the beginning of the period
to the 4.20% range at the end of the period. This large increase is
primarily the result of the Federal Reserve Board's continued
efforts to curtail economic growth and contain inflationary
pressures by tightening monetary policy.
<PAGE>
CMA Ohio Municipal Money Fund maintained a somewhat defensive
strategy during the six months ended September 30, 1994, as the
Federal Reserve Board continued to increase short-term interest
rates. The average maturity of the Fund fluctuated in the 55-day
range for the majority of the period. Maturing one-year short-term
municipal notes were replaced with a combination of variable rate
demand notes and tax-exempt commercial paper. In addition, we
purchased short-term municipal notes at attractive yields for
diversification needs as issuance became available. We continue to
closely monitor credit quality while seeking to offer shareholders
an attractive tax-exempt yield.

In Conclusion
We thank you for your support of CMA Ohio Municipal Money Fund, and
we look forward to serving your investment needs in the future.

Sincerely,


(Arthur Zeikel)
Arthur Zeikel
President


(Vincent R. Giordano)
Vincent R. Giordano
Senior Vice President and Portfolio Manager




October 25, 1994




Portfolio Abbreviations for CMA Ohio Municipal Money Fund

AMT      Alternative Minimum Tax (subject to)
BAN      Bond Anticipation Notes
CP       Commercial Paper
HFA      Housing Finance Authority
IDR      Industrial Development Revenue Bonds
M/F      Multi-Family
PCR      Pollution Control Revenue Bonds
S/F      Single-Family
TRAN     Tax Revenue Anticipation Notes
UPDATES  Unit Price Daily Adjustable Tax-Exempt
         Securities
VRDN     Variable Rate Demand Notes
<PAGE>




<TABLE>
CMA OHIO MUNICIPAL MONEY FUND
SCHEDULE OF INVESTMENTS AS OF SEPTEMBER 30, 1994                                                          (IN THOUSANDS)
<CAPTION>
                Face                                                                                             Value
State          Amount                                  Issue                                                   (Note 1a)
<S>           <C>       <S>                                                                                     <C>
Ohio--100.6%  $ 2,250   Akron, Ohio, Sanitation Sewer System Improvement Notes, 3.63%
                        due 10/13/1994                                                                          $  2,250
                7,700   Black River, Ohio, Local School District, BAN, 4.02% due 12/02/1994                        7,706
                  635   Brooklyn Heights, Ohio, IDR (ATC Nymold Inc.), VRDN,
                        AMT, 3.95% due 2/01/2002 (a)                                                                 635
                2,870   Butler County, Ohio, BAN, 3.63% due 10/28/1994                                             2,871
                1,800   Cincinnati and Hamilton Counties, Ohio, Port Authority Economic
                        Development Revenue Bonds (Kenwood Office Association
                        Project), VRDN, 3.95% due 9/01/2025 (a)                                                    1,800
                  500   Cincinnati and Hamilton Counties, Ohio, Port Authority, IDR, Refunding
                        (Schottenstein Stores), VRDN, 3.70% due 9/01/1997 (a)                                        500
                        Cincinnati, Ohio, Student Loan Funding Corporation, Student Loan Revenue
                        Bonds, VRDN, AMT (a):
                1,500      Series A-1, 3.70% due 1/01/2007                                                         1,500
                1,500      Series A-3, 3.70% due 1/01/2007                                                         1,500
                2,700   Clermont County, Ohio, IDR (Southern Ohio Fabricator), VRDN, AMT,
                        Series A, 3.85% due 9/01/2005 (a)                                                          2,700
                3,750   Cleveland, Ohio, City School District, TRAN, 4.50% due 12/30/1994                          3,763
                5,000   Cleveland, Ohio, Public Power System Revenue Bonds, BAN, 2.51%
                        due 12/29/1994                                                                             5,008
                2,000   Clinton County, Ohio, Airport Facilities Revenue Refunding Bonds
                        (Wilmington Air Park, Inc.), VRDN, 3.75% due 6/01/2011 (a)                                 2,000
                5,500   Cuyahoga County, Ohio, Hospital Improvement Revenue Bonds (Cleveland
                        University Hospital), VRDN, 3.80% due 1/01/2016 (a)                                        5,500
                1,000   Cuyahoga County, Ohio, IDR (Allen Group Incorporated Project),
                        VRDN, 3.50% due 12/01/2015 (a)                                                             1,000
                4,200   Cuyahoga County, Ohio, IDR (Cleveland E Excel Ltd.), VRDN, AMT, 3.95%
                        due 3/01/2019 (a)                                                                          4,200
                1,770   Dawson-Bryant, Ohio, Local School District Construction and Improvement
                        Notes, 4.25% due 6/01/1995                                                                 1,773
                5,300   Dayton, Ohio, Airport Improvement, BAN, AMT, 2.90% due 10/25/1994                          5,300
                1,000   Dayton, Ohio, Special Facilities Revenue Bonds (Emery Air Freight Project),
                        VRDN, AMT, Series D, 4.10% due 10/01/2009 (a)                                              1,000
                  500   Erie County, Ohio, IDR (Brighton Manor Company Project), VRDN, AMT,
                        3.65% due 11/01/2016 (a)                                                                     500
                1,915   Erie County, Ohio, IDR, Refunding (Huron Health Care Center Project),
<PAGE>                  VRDN, 3.70% due 8/01/2007 (a)                                                              1,915
                1,500   Fairfield County, Ohio, BAN, 3.15% due 10/28/1994                                          1,501
                4,400   Franklin County, Ohio, Health System Revenue Bonds (Franciscan Sister-
                        Saint Anthony Medical Facility), VRDN, Series B, 3.80% due 7/01/2015 (a)                   4,400
                        Franklin County, Ohio, Hospital Revenue Bonds, VRDN (a):
                5,500      (Children's Hospital Project), Series B, 3.80% due 12/01/2014                           5,500
                1,000      (Lutheran Senior City Inc. Project), 3.75% due 5/01/2015                                1,000
</TABLE>



<TABLE>
CMA OHIO MUNICIPAL MONEY FUND
SCHEDULE OF INVESTMENTS AS OF SEPTEMBER 30, 1994 (CONTINUED)                                              (IN THOUSANDS)
<CAPTION>
                Face                                                                                             Value
State          Amount                                  Issue                                                   (Note 1a)
<S>           <C>       <S>                                                                                     <C>
Ohio          $ 1,000   Franklin County, Ohio, IDR (Inland Products Inc. Project), VRDN, 3.85%
(continued)             due 8/01/2004 (a)                                                                       $  1,000
                        Franklin County, Ohio, IDR, VRDN, AMT (a):
                3,100      Refunding (Grant Medical Center Project), 3.65% due 12/01/1994                          3,100
                2,855      Refunding (Heekin Can Inc. Project), 3.65% due 12/01/1994                               2,855
                2,500      Refunding (Heekin Can Inc. Project), 3.85% due 5/01/2007                                2,500
                2,000      (Tigeropoly Manufacturing, Inc.), 3.75% due 7/01/1997                                   2,000
                3,000   Greene County, Ohio, Certificates of Indebtedness, Series B, 4.25%
                        due 7/19/1995                                                                              3,005
                3,400   Greene County, Ohio, IDR, Refunding (Apple Valley Association), VRDN,
                        3.20% due 8/01/2009 (a)                                                                    3,400
                6,200   Hamilton County, Ohio, Health Care Systems Revenue Bonds (Franciscan
                        Sister Poor Health), VRDN, Series A, 3.80% due 3/01/2017 (a)                               6,200
                3,000   Lorain County, Ohio, BAN, 3% due 2/10/1995                                                 3,003
                2,000   Lucas County, Ohio, BAN, Series 2, 3.60% due 12/15/1994                                    2,002
                        Marion County, Ohio, Hospital Improvement Revenue Bonds
                        (Pooled Lease Program):
                2,435      3% due 10/01/1994                                                                       2,435
                1,615      VRDN, 3.70% due 5/01/2019 (a)                                                           1,615
                3,500   Mentor, Ohio, IDR (Metcor Partnership/Tridelt), VRDN, AMT,
                        3.95% due 12/01/2008 (a)                                                                   3,500
                3,680   Morrow County, Ohio, BAN (Detention Facilities), 4.20% due 6/01/1995                       3,689
                2,455   Ohio HFA, M/F Housing Revenue Bonds (Kenwood Congregate
                        Retirement Program), VRDN, 3% due 12/01/2015 (a)                                           2,455
                  600   Ohio HFA, S/F Mortgage Revenue Bonds, AMT, Series A-2, 3.40% due 12/01/1994                  600
                2,500   Ohio State Air Quality Development Authority, Pollution Control
                        Facilities, PCR (Duquesne Light), CP, AMT, 3.30% due 11/18/1994                            2,500
                        Ohio State Air Quality Development Authority Revenue Bonds (a):
                  400      (Honda America Manufacturing), VRDN, 3.40% due 1/01/1997                                  400
                1,600      (JMG Funding L.P. Project), UPDATES, AMT, Series A,
                           3.75% due 10/01/2027                                                                    1,600
                2,000      (JMG Funding L.P. Project), UPDATES, AMT, Series B,
<PAGE>                     3.85% due 10/01/2027                                                                    2,000
                1,115   Ohio State Coal Development, Series B, 5% due 8/01/1995                                    1,124
                        Ohio State Environmental Improvement Revenue Bonds, Ohio Water
                        Development (Mead Corporation Project), CP, AMT:
                5,000      3.30% due 11/07/1994                                                                    5,000
                1,000      3.30% due 11/08/1994                                                                    1,000
                1,500      3.05% due 11/09/1994                                                                    1,500
                1,500      3.05% due 11/29/1994                                                                    1,500
                4,000   Ohio State Environmental Improvement Revenue Bonds (US Steel Corp.),
                        VRDN, 3.65% due 5/01/2011 (a)                                                              4,000
                  500   Ohio State Environmental Water Development Authority Revenue Bonds
                        (Honda America), VRDN, 3.40% due 1/01/1997 (a)                                               500
                3,400   Ohio State Higher Educational Facilities Revenue Bonds (Kenyon College
                        Project), VRDN, 3.70% due 4/01/2022 (a)                                                    3,400
                1,050   Ohio State PCR, Refunding (Alcoa Project), VRDN, 3.65% due 10/01/2000 (a)                  1,050
                2,100   Ohio State University, General Receipts, VRDN, Series B, 3.50% due 12/01/2012 (a)          2,100
                3,000   Ohio State Water Development Authority, Pollution Control Facilities, PCR
                        (Duquesne Light), CP, 3.40% due 11/17/1994                                                 3,000
                        Ohio State Water Development Authority, Pollution Control Facilities
                        Revenue Bonds:
                3,000      (Duquesne Light Co. Project), CP, AMT, 3.50% due 11/17/1994                             3,000
                4,500      (Ohio Edison Co.), Series B, 4.25% due 3/01/1995 (a)                                    4,500
</TABLE>


<TABLE>
CMA OHIO MUNICIPAL MONEY FUND
SCHEDULE OF INVESTMENTS AS OF SEPTEMBER 30, 1994 (CONCLUDED)                                              (IN THOUSANDS)
<CAPTION>
                Face                                                                                             Value
State          Amount                                  Issue                                                   (Note 1a)
<S>           <C>       <S>                                                                                     <C>
Ohio          $ 1,280   Ottoville, Ohio, Local School District Revenue Bonds, BAN, UT, 4.40% due
(concluded)             2/01/1995                                                                               $  1,284
                1,000   Paulding County, Ohio, IDR (Countrymark Cooperative Inc. Project),
                        VRDN, 3.80% due 8/01/1999 (a)                                                              1,000
                2,100   Portage County, Ohio, IDR (NCSP L.P. Project), VRDN, AMT, 4.15%
                        due 6/01/2014 (a)                                                                          2,100
                3,000   Richland County, Ohio, BAN, 4.85% due 9/14/1995                                            3,016
                1,800   Rickenbacker, Ohio, Port Authority, IDR, Refunding (Rickenbacker Holdings, Inc.),
                        VRDN, 3.70% due 12/01/2010 (a)                                                             1,800
                1,300   Sandusky County, Ohio, IDR (Brighton Manor Co. Project), VRDN, AMT, 3.65%
                        due 12/01/2016 (a)                                                                         1,300
                        Stark County, Ohio, BAN:
                1,500      3.02% due 10/26/1994                                                                    1,501
                1,010      3.15% due 12/09/1994                                                                    1,011
                1,000   Summit County, Ohio, Hospital Facilities Revenue Bonds (Cuyahoga Falls
                        General Hospital), VRDN, Series B, 3.80% due 7/01/1999 (a)                                 1,000
                        Summit County, Ohio, IDR:
                2,500      (American Laser Tech Inc. Project), VRDN, 4.15% due 3/01/2001 (a)                       2,500
                1,000      (Austin Printing Co. Inc. Project), VRDN, AMT, 4% due 8/01/2006 (a)                     1,000
<PAGE>            845      (Lucerne Production Project), VRDN, AMT, 3.95% due 6/01/2002 (a)                          845
                  800      (Struktol Project), VRDN, AMT, Series A, 3.95% due 6/01/2002 (a)                          800
                1,200      (Texler Inc. Project), AMT, 3.40% due 11/01/1994                                        1,200
                1,400   Toledo Lucas County, Ohio, Port Authority, Development Revenue Bonds
                        (Frostbite Brands Inc. Project), VRDN, AMT, 4.30% due 12/01/2013 (a)                       1,400
                        Toledo, Ohio, City Services Special Assessment Notes:
                2,500      3.20% due 12/01/1994 (b)                                                                2,501
                1,700      Refunding, 4.15% due 6/01/1995                                                          1,702
                1,250   Troy, Ohio, Economic Development Revenue Bonds (L&CP Corporation  Project),
                        AMT, 3.35% due 12/01/1994                                                                  1,250
                        University of Cincinnati, Ohio, General Receipts, BAN:
                5,465      Series S, 4.75% due 8/30/1995                                                           5,499
                3,000      Series S1, 4% due 3/23/1995                                                             3,011
                1,960   Vermilion, Ohio, IDR, Refunding (Landover Properties Ltd.), VRDN,
                        3.65% due 10/01/2004 (a)                                                                   1,960
                        Warren County, Ohio, IDR, VRDN (a):
                4,000      (Johnson & Hardin Enterprises), AMT, Series A, 3.85% due 2/01/2010                      4,000
                1,900      (Pioneer Industrial Components), 3.55% due 12/01/2005                                   1,900
                1,000   Willoughby, Ohio, BAN, 4.19% due 8/16/1995                                                 1,002
                2,650   Willoughby, Ohio, IDR (Malish Brush & Specialty), VRDN, AMT, 3.95% due
                        6/01/2009 (a)                                                                              2,650
                3,265   Wood County, Ohio, Economic Development Revenue Bonds (Great Lakes
                        Window Project), AMT, 3.75% due 12/01/1994                                                 3,265
                4,700   Zanesville-Muskingum County, Ohio, Port Authority, IDR (B.E. Products Inc.
                        Project), VRDN, AMT, 3.95% due 9/01/2004 (a)                                               4,700

                        Total Investments (Cost--$202,552*)--100.6%                                              202,552
                        Liabilities in Excess of Other Assets--(0.6%)                                             (1,178)
                                                                                                                --------
                        Net Assets--100.0%                                                                      $201,374
                                                                                                                ========

<FN>
(a)The interest rate is subject to change periodically based on certain indexes. 
   The interest rate shown is the interest rate in effect at September 30, 1994.
(b)Escrowed to maturity.
  *Cost for Federal income tax purposes.

See Notes to Financial Statements.
</TABLE>
<PAGE>


<TABLE>
CMA OHIO MUNICIPAL MONEY FUND
STATEMENT OF ASSETS AND LIABILITIES AS OF SEPTEMBER 30, 1994
<S>                                                                                      <C>                <C> 
Assets:
Investments, at value (identified cost--$202,551,928) (Note 1a)                                             $202,551,928
Cash                                                                                                             659,837
Interest receivable                                                                                            1,328,552
Deferred organization expenses (Note 1d)                                                                          16,200
Prepaid registration fees and other assets (Note 1d)                                                               1,100
                                                                                                            ------------
Total assets                                                                                                 204,557,617
                                                                                                            ------------
Liabilities:
Payables:
 Securities purchased                                                                    $  3,000,575
 Investment adviser (Note 2)                                                                   84,407
 Distributor (Note 2)                                                                          51,649          3,136,631
                                                                                         ------------
Accrued expenses and other liabilities                                                                            47,438
                                                                                                            ------------
Total liabilities                                                                                              3,184,069
                                                                                                            ------------
Net Assets                                                                                                  $201,373,548
                                                                                                            ============

Net Assets Consist of:
Shares of beneficial interest, $0.10 par value, unlimited number of shares authorized                       $ 20,140,510
Paid-in capital in excess of par                                                                             181,264,593
Accumulated realized capital losses--net (Note 4)                                                                (31,555)
                                                                                                            ------------
Net Assets--Equivalent to $1.00 per share based on 201,405,103 shares of beneficial
interest outstanding                                                                                        $201,373,548
                                                                                                            ============

</TABLE>
<PAGE>

<TABLE>
CMA OHIO MUNICIPAL MONEY FUND
STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED SEPTEMBER 30, 1994
<S>                                                                                      <C>                <C> 
Investment Income (Note 1c):
Interest and amortization of premium and discount earned                                                    $  3,068,335

Expenses:
Investment advisory fees (Note 2)                                                        $    526,176
Distribution fees (Note 2)                                                                    130,527
Transfer agent fees (Note 2)                                                                   27,244
Professional fees                                                                              20,755
Accounting services (Note 2)                                                                   15,714
Printing and shareholder reports                                                               13,912
Registration fees (Note 1d)                                                                     9,981
Custodian fees                                                                                  9,621
Pricing fees                                                                                    4,607
Amortization of organization expenses (Note 1d)                                                 3,466
Trustees' fees and expenses                                                                     1,307
Other                                                                                           2,253
                                                                                         ------------
Total expenses                                                                                                   765,563
                                                                                                            ------------
Investment income--net                                                                                         2,302,772

Realized Loss on Investments--Net (Note 1c)                                                                         (285)
                                                                                                            ------------
Net Increase in Net Assets Resulting from Operations                                                        $  2,302,487
                                                                                                            ============




See Notes to Financial Statements.
</TABLE>
<PAGE>

<TABLE>
CMA OHIO MUNICIPAL MONEY FUND
STATEMENTS OF CHANGES IN NET ASSETS
<CAPTION>
                                                                                        For the Six         For the Year
                                                                                        Months Ended            Ended
                                                                                           Sept. 30,           March 31,
Increase (Decrease) in Net Assets:                                                            1994               1994
<S>                                                                                      <C>                <C> 
Operations:
Investment income--net                                                                   $  2,302,772       $  3,547,011
Realized loss on investments--net                                                                (285)            (3,204)
                                                                                         ------------       ------------
Net increase in net assets resulting from operations                                        2,302,487          3,543,807
                                                                                         ------------       ------------
Dividends to Shareholders (Note 1e):
Investment income--net                                                                     (2,302,772)        (3,547,011)
                                                                                         ------------       ------------
Net decrease in net assets resulting from dividends to shareholders                        (2,302,772)        (3,547,011)
                                                                                         ------------       ------------
Beneficial Interest Transactions (Note 3):
Net proceeds from sale of shares                                                          371,367,250        854,339,246
Net asset value of shares issued to shareholders in reinvestment of dividends (Note 1e)     2,302,735          3,547,085
                                                                                         ------------       ------------
                                                                                          373,669,985        857,886,331
Cost of shares redeemed                                                                  (385,951,135)      (831,571,902)
                                                                                         ------------       ------------
Net increase (decrease) in net assets derived from beneficial interest transactions       (12,281,150)        26,314,429
                                                                                         ------------       ------------
Net Assets:
Total increase (decrease) in net assets                                                   (12,281,435)        26,311,225
Beginning of period                                                                       213,654,983        187,343,758
                                                                                         ------------       ------------
End of period                                                                            $201,373,548       $213,654,983
                                                                                         ============       ============




See Notes to Financial Statements.
</TABLE>
<PAGE>


<TABLE>
CMA OHIO MUNICIPAL MONEY FUND
FINANCIAL HIGHLIGHTS
<CAPTION>
                                                                                                                For the
                                                                    For the                                      Period
The following per share data and ratios have been derived          Six Months                                   April 29,
from information provided in the financial statements.		      Ended                                    1991++ to
              						            Sept. 30,   For the Year Ended March 31,    March 31,
Increase (Decrease) in Net Asset Value:                                1994         1994           1993            1992
<S>                                                                 <C>           <C>           <C>             <C>
Per Share Operating Performance:
Net asset value, beginning of period                                $  1.00       $  1.00       $   1.00        $   1.00
                                                                    -------       -------       --------        --------
Investment income--net                                                  .01           .02            .02             .03
                                                                    -------       -------       --------        --------
Total from investment operations                                        .01           .02            .02             .03
                                                                    -------       -------       --------        --------
Less dividends:
 Investment income--net                                                (.01)         (.02)          (.02)           (.03)
                                                                    -------       -------       --------        --------
Net asset value, end of period                                      $  1.00       $  1.00       $   1.00        $   1.00
                                                                    =======       =======       ========        ========
Total Investment Return                                               2.19%*        1.88%          2.27%           3.65%*
                                                                    =======       =======       ========        ========
Ratios to Average Net Assets:
Expenses, net of reimbursement and excluding distribution fees         .60%*         .59%           .61%            .44%*
                                                                    =======       =======       ========        ========
Expenses, net of reimbursement                                         .73%*         .72%           .74%            .57%*
                                                                    =======       =======       ========        ========
Expenses                                                               .73%*         .72%           .74%            .82%*
                                                                    =======       =======       ========        ========
Investment income--net                                                2.19%*        1.86%          2.24%           3.52%*
                                                                    =======       =======       ========        ========
Supplemental Data:
Net assets, end of period (in thousands)                           $201,374      $213,655       $187,344        $192,173
                                                                    =======       =======       ========        ========

<FN>
 *Annualized.
++Commencement of Operations.




See Notes to Financial Statements.
</TABLE>
<PAGE>



CMA OHIO MUNICIPAL MONEY FUND
NOTES TO FINANCIAL STATEMENTS


1. Significant Accounting Policies:
CMA Ohio Municipal Money Fund (the "Fund") is part of CMA Multi-
State Municipal Series Trust (the "Trust"). The Fund is registered
under the Investment Company Act of 1940 as a non-diversified, open-
end management investment company. The following is a summary of
significant accounting policies followed by the Fund.

(a) Valuation of investments--Investments are valued at amortized
cost, which approximates market value. For the purpose of valuation,
the maturity of a variable rate demand instrument is deemed to be
the next coupon date on which the interest rate is to be adjusted.
In the case of a floating rate instrument, the remaining maturity is
the demand notice payment period.

(b) Income taxes--It is the Fund's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated
investment companies and to distribute substantially all of its
taxable income to its shareholders. Therefore, no Federal income tax
provision is required.

(c) Security transactions and investment income--Security
transactions are recorded on the dates the transactions are entered
into (the trade dates). Interest income (including amortization of
premium and discount) is recognized on the accrual basis. Realized
gains and losses on security transactions are determined on the
identified cost basis.

(d) Deferred organization expenses and prepaid registration fees--
Deferred organization expenses are charged to expense on a straight-
line basis over a five-year period. Prepaid registration fees are
charged to expense as the related shares are issued.

(e) Dividends to shareholders--The Fund declares dividends daily and
reinvests daily such dividends (net of non-resident alien tax
withheld) in additional fund shares at net asset value. Dividends
are declared from the total of net investment income, excluding
discounts earned other than original issue discounts. Net realized
capital gains, if any, are normally distributed annually after
deducting prior years' loss carryforward. The Fund may distribute
capital gains more frequently than annually in order to maintain the
Fund's net asset value at $1.00 per share.
<PAGE>
2. Investment Advisory Agreement and Transactions with Affiliates:
The Fund has entered into an Investment Advisory Agreement with Fund
Asset Management, L.P. ("FAM"). The general partner of FAM is
Princeton Services, Inc. ("PSI"), an indirect wholly-owned
subsidiary of Merrill Lynch & Co. ("ML & Co."). The limited partners
are ML & Co. and Fund Asset Management, Inc. ("FAMI"), which is also
an indirect wholly-owned subsidiary of ML & Co.

FAM is responsible for the management of the Fund's portfolio and
provides the necessary personnel, facilities, equipment and certain
other services necessary to the operations of the Fund. For such
services, the Fund pays a monthly fee based upon the average daily
value of the Fund's net assets, at the following annual rates: 0.50%
of the first $500 million of average daily net assets; 0.425% of
average daily net assets in excess of $500 million but not exceeding
$1 billion; and 0.375% of average daily net assets in excess of $1
billion.

The most restrictive annual expense limitation requires that the
Adviser reimburse the Fund to the extent the Fund's expenses
(excluding interest, taxes, distribution fees, brokerage fees and
commissions, and extraordinary items) exceed in any fiscal year 2.5%
of the Fund's first $30 million of average daily net assets, 2.0% of
the Fund's next $70 million of average daily net assets, and 1.5% of
the average daily net assets in excess thereof. No fee payment will
be made to the Investment Adviser during any year which will cause
such expenses to exceed the pro rata expense limitation at the time
of such payment.



CMA OHIO MUNICIPAL MONEY FUND
NOTES TO FINANCIAL STATEMENTS (CONCLUDED)


Pursuant to the Distribution and Shareholder Servicing Plan in
compliance with Rule 12b-1 under the Investment Company Act of 1940,
Merrill Lynch, Pierce, Fenner & Smith Inc. ("MLPF&S") receives a
distribution fee from the Fund at the end of each month at the
annual rate of 0.125% of average daily net assets of the Fund. The
distribution fee is to compensate MLPF&S financial consultants and
other directly involved branch office personnel for selling shares
of the Fund and for providing direct personal services to
shareholders. The distribution fee is not compensation for the
administrative and operational services rendered to the Fund by
MLPF&S in processing share orders and administering shareholder
accounts.
<PAGE>
Financial Data Services, Inc. ("FDS"), a wholly-owned subsidiary of
ML & Co., is the Fund's transfer agent.

Accounting services are provided to the Fund by FAM at cost.

Certain officers and/or trustees of the Fund are officers and/or
directors of FAM, FAMI, PSI, MLPF&S, FDS, and/or ML & Co.

3. Shares of Beneficial Interest:
The number of shares purchased and redeemed during the period
corresponds to the amounts included in the Statements of Changes in
Net Assets for net proceeds from sale of shares and cost of shares
redeemed, respectively, since shares are recorded at $1.00 per
share.

4. Capital Loss Carryforward:
At March 31, 1994, the Fund had a net capital loss carryforward of
approximately $31,300, of which $22,800 expires in 2000, $4,800
expires in 2001 and $3,700 expires in 2002. This amount will be
available to offset like amounts of any future taxable gains.




CMA OHIO MUNICIPAL MONEY FUND


Officers and Trustees
Arthur Zeikel--President and Trustee
Ronald W. Forbes--Trustee
Cynthia A. Montgomery--Trustee
Charles C. Reilly--Trustee
Kevin A. Ryan--Trustee
Richard R. West--Trustee
Terry K. Glenn--Executive Vice President
Vincent R. Giordano--Senior Vice President
Edward J. Andrews--Vice President
Donald C. Burke--Vice President
Peter J. Hayes--Vice President
Kenneth A. Jacob--Vice President
Kevin A. Schiatta--Vice President
Helen Marie Sheehan--Vice President
Gerald M. Richard--Treasurer
Robert Harris--Secretary
<PAGE>
Custodian
State Street Bank and Trust Company
P.O. Box 1713
Boston, Massachusetts 02101

Transfer Agent
Financial Data Services, Inc.
4800 Deer Lake Drive East
Jacksonville, Florida 32246-6484
(800) 221-7210*

[FN]
*For inquiries regarding your CMA account,
 call (800) CMA-INFO [(800) 262-4636].



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