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

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                             616
<SECURITIES>                                         0
<RECEIVABLES>                                    1,461
<ALLOWANCES>                                         0
<INVENTORY>                                      1,194
<CURRENT-ASSETS>                                 3,271
<PP&E>                                          12,163
<DEPRECIATION>                                   6,369
<TOTAL-ASSETS>                                   9,588
<CURRENT-LIABILITIES>                            1,554
<BONDS>                                          1,318
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                        160
<COMMON>                                         1,213
<OTHER-SE>                                       3,875
<TOTAL-LIABILITY-AND-EQUITY>                     9,588
<SALES>                                          3,598
<TOTAL-REVENUES>                                 3,676
<CGS>                                            2,864
<TOTAL-COSTS>                                    2,864
<OTHER-EXPENSES>                                   235
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  44
<INCOME-PRETAX>                                    218
<INCOME-TAX>                                       103
<INCOME-CONTINUING>                                109
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       109
<EPS-BASIC>                                       0.48
<EPS-DILUTED>                                     0.48