<ARTICLE>                     5
<LEGEND>
This  schedule  contains  summary  financial   information  extracted  from  the
consolidated  balance  sheet  of  AT&T  Corp.  at  December  31,  1999,  and the
consolidated  statement of income for the twelve-month period ended December 31,
1999,  and  is  qualified  in  its  entirety  by  reference  to  such  financial
statements.
</LEGEND>
<MULTIPLIER>                                   1,000,000

                                            
<PERIOD-TYPE>                                  12-MOS
<FISCAL-YEAR-END>                              DEC-31-1999
<PERIOD-START>                                 JAN-01-1999
<PERIOD-END>                                   DEC-31-1999
<CASH>                                         1,024
<SECURITIES>                                   0
<RECEIVABLES>                                  11,960
<ALLOWANCES>                                   1,507
<INVENTORY>                                    0
<CURRENT-ASSETS>                               13,884
<PP&E>                                         69,675
<DEPRECIATION>                                 30,057
<TOTAL-ASSETS>                                 169,406
<CURRENT-LIABILITIES>                          28,207
<BONDS>                                        21,591
<PREFERRED-MANDATORY>                          6,326
<PREFERRED>                                    0
<COMMON>                                       4,461
<OTHER-SE>                                     74,466
<TOTAL-LIABILITY-AND-EQUITY>                   169,406
<SALES>                                        0
<TOTAL-REVENUES>                               62,391
<CGS>                                          0
<TOTAL-COSTS>                                  51,532
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               1,416
<INTEREST-EXPENSE>                             1,651
<INCOME-PRETAX>                                6,685
<INCOME-TAX>                                   3,257
<INCOME-CONTINUING>                            3,428
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   3,428
<EPS-BASIC>                                    1.77
<EPS-DILUTED>                                  1.74