<ARTICLE>                     5
<LEGEND>
This  schedule  contains  summary  financial   information  extracted  from  the
unaudited  consolidated  balance sheet of AT&T Corp. at September 30, 1999,  and
the unaudited  consolidated  statement of income for the nine-month period 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>                                         0
<SECURITIES>                                   0
<RECEIVABLES>                                  12,117
<ALLOWANCES>                                   1,488
<INVENTORY>                                    0
<CURRENT-ASSETS>                               13,040
<PP&E>                                         65,361
<DEPRECIATION>                                 28,886
<TOTAL-ASSETS>                                 161,806
<CURRENT-LIABILITIES>                          23,515
<BONDS>                                        22,073
<PREFERRED-MANDATORY>                          6,346
<PREFERRED>                                    0
<COMMON>                                       4,461
<OTHER-SE>                                     70,302
<TOTAL-LIABILITY-AND-EQUITY>                   161,806
<SALES>                                        0
<TOTAL-REVENUES>                               46,057
<CGS>                                          0
<TOTAL-COSTS>                                  37,639
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               1,077
<INTEREST-EXPENSE>                             1,108
<INCOME-PRETAX>                                6,158
<INCOME-TAX>                                   2,679
<INCOME-CONTINUING>                            3,479
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   3,479
<EPS-BASIC>                                    1.41
<EPS-DILUTED>                                  1.39