<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the Form
10-Q of Alcan Aluminium Limited for the quarter ended September 30, 1999 and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000,000


                                    
<PERIOD-TYPE>                                   9-MOS
<FISCAL-YEAR-END>                         DEC-31-1999
<PERIOD-START>                            JAN-01-1999
<PERIOD-END>                              SEP-30-1999
<CASH>                                            440
<SECURITIES>                                        0
<RECEIVABLES>                                   1,384
<ALLOWANCES>                                        0
<INVENTORY>                                     1,208
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<PP&E>                                         12,703
<DEPRECIATION>                                  6,513
<TOTAL-ASSETS>                                  9,759
<CURRENT-LIABILITIES>                           1,538
<BONDS>                                         1,304
<PREFERRED-MANDATORY>                               0
<PREFERRED>                                       160
<COMMON>                                        1,218
<OTHER-SE>                                      4,014
<TOTAL-LIABILITY-AND-EQUITY>                    9,759
<SALES>                                         5,418
<TOTAL-REVENUES>                                5,560
<CGS>                                           4,254
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<EPS-BASIC>                                    1.19
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