CERTIFICATION
Pursuant to Rule 497(j) under the Securities Act of 1933 (the "1933 Act"),
the undersigned hereby certifies as follows:
1. This filing is made on behalf of Janus Investment Fund (the
"Registrant"). Registrant's 1933 Act No. is 2-34393 and Registrant's
1940 Act No. is 811-1879.
2. There are no changes to the Prospectuses and Statements of Additional
Information from the forms of the Prospectuses and Statements of
Additional Information that were filed in Post-Effective Amendment No.
90 ("PEA No. 90") on January 31, 2000 pursuant to Rule 485(b) under
the 1933 Act for the following funds:
Janus Fund
Janus Enterprise Fund
Janus Mercury Fund
Janus Olympus Fund
Janus Overseas Fund
Janus Twenty Fund
Janus Venture Fund
Janus Global Life Sciences Fund
Janus Global Technology Fund
Janus Worldwide Fund
Janus Balanced Fund
Janus Equity Income Fund
Janus Growth and Income Fund
Janus Flexible Income Fund
Janus High-Yield Fund
Janus Federal Tax-Exempt Fund
Janus Short-Term Bond Fund
Janus Special Situations Fund
Janus Strategic Value Fund
Janus Money Market Fund-Investor Shares
Janus Money MarketFund-Institutional Shares
Janus Money Market Fund-Service Shares
Janus Government Money Market Fund-Investor Shares
Janus Government Money Market Fund-Institutional Shares
Janus Government Money Market Fund-Service Shares
Janus Tax-Exempt Money Market Fund-Investor Shares
Janus Tax-Exempt Money Market Fund-Institutional Shares
Janus Tax-Exempt Money Market Fund-Service Shares
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(collectively, the "Funds").
3. The text of PEA No. 90 has been filed electronically.
DATED: February 1, 2000
JANUS INVESTMENT FUND
on behalf of the Funds
BY: /s/ Kelley Abbott Howes
Kelley Abbott Howes
Vice President and Secretary
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