<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM (A) NORTEL
NETWORKS CORPORATION CONSOLIDATED BALANCE SHEET AT SEPTEMBER 30, 2000 AND
CONSOLIDATED STATEMENT OF OPERATIONS FOR THE NINE MONTHS ENDED SEPTEMBER 30,
2000 (UNAUDITED) AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH (B) FORM
10-Q OF NORTEL NETWORKS CORPORATION FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30,
2000 (UNAUDITED)
</LEGEND>
<MULTIPLIER> 1,000,000
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<EXCHANGE-RATE> 1
<CASH> 1,758
<SECURITIES> 0
<RECEIVABLES> 9,275
<ALLOWANCES> 710
<INVENTORY> 4,059
<CURRENT-ASSETS> 15,211
<PP&E> 5,728
<DEPRECIATION> 2,800
<TOTAL-ASSETS> 33,903
<CURRENT-LIABILITIES> 7,727
<BONDS> 1,543
0
0
<COMMON> 24,161
<OTHER-SE> (1,829)
<TOTAL-LIABILITY-AND-EQUITY> 33,903
<SALES> 21,457
<TOTAL-REVENUES> 21,457
<CGS> 12,299
<TOTAL-COSTS> 12,299
<OTHER-EXPENSES> 7,049
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 118
<INCOME-PRETAX> (1,254)
<INCOME-TAX> 807
<INCOME-CONTINUING> (2,061)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (2,061)
<EPS-BASIC> (.71)<F1>
<EPS-DILUTED> (.71)
<FN>
<F1>FOR PURPOSES OF THIS STATEMENT, PRIMARY MEANS BASIC.
</FN>
</TABLE>