<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS FOR ADC TELECOMMUNICATIONS, INC. AND SUBSIDIARIES FOR THE
NINE-MONTH PERIOD ENDED JULY 31, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.


<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          OCT-31-1999
<PERIOD-START>                             NOV-01-1998
<PERIOD-END>                               JUL-31-1999
<CASH>                                         227,933
<SECURITIES>                                   144,054
<RECEIVABLES>                                  401,531
<ALLOWANCES>                                     9,182
<INVENTORY>                                    273,785
<CURRENT-ASSETS>                             1,132,754
<PP&E>                                         649,799
<DEPRECIATION>                                 313,739
<TOTAL-ASSETS>                               1,855,437
<CURRENT-LIABILITIES>                          345,925
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        27,364
<OTHER-SE>                                   1,463,014
<TOTAL-LIABILITY-AND-EQUITY>                 1,855,437
<SALES>                                      1,517,743
<TOTAL-REVENUES>                             1,517,743
<CGS>                                          811,651
<TOTAL-COSTS>                                  811,651
<OTHER-EXPENSES>                               622,168
<LOSS-PROVISION>                                   587
<INTEREST-EXPENSE>                               6,756
<INCOME-PRETAX>                                 85,302
<INCOME-TAX>                                    37,735
<INCOME-CONTINUING>                             47,567
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    47,567
<EPS-BASIC>                                       0.08
<EPS-DILUTED>                                     0.08

<F1>AMOUNT IS NET OF ALLOWANCE FOR BAD DEBTS AND RETURNS.
<F2>AMOUNT IS NET OF OBSOLESCENCE RESERVES.