<ARTICLE>                     5
<LEGEND>
     THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED STATEMENT OF INCOME FOR THE SIX MONTHS ENDED JUNE 30, 1997 AND THE
CONDENSED BALANCE SHEET AS OF JUNE 30, 1997 AND IS QUALIFIED IN INTS ENTIRETY
BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK>               0000926282         
<NAME>              ADTRAN, INC.
<MULTIPLIER>        1
<CURRENCY>          US Dollar                         

                 
<PERIOD-TYPE>       6-MOS
<FISCAL-YEAR-END>   DEC-31-1997
<PERIOD-START>      JAN-01-1997              
<PERIOD-END>        JUN-30-1997                    
<EXCHANGE-RATE>     1                          
<CASH>                                         $21,578,144
<SECURITIES>                                    28,533,240
<RECEIVABLES>                                   32,615,235
<ALLOWANCES>                                      (859,542)
<INVENTORY>                                     54,919,252
<CURRENT-ASSETS>                               141,144,650
<PP&E>                                          79,360,110
<DEPRECIATION>                                 (17,188,755)
<TOTAL-ASSETS>                                 253,316,005
<CURRENT-LIABILITIES>                           14,246,218
<BONDS>                                         50,000,000
<PREFERRED-MANDATORY>                                    0
<PREFERRED>                                              0
<COMMON>                                           393,126
<OTHER-SE>                                     187,074,545
<TOTAL-LIABILITY-AND-EQUITY>                   253,316,005
<SALES>                                        120,355,392
<TOTAL-REVENUES>                               120,355,392
<CGS>                                           59,931,941
<TOTAL-COSTS>                                   59,931,941
<OTHER-EXPENSES>                                21,161,999
<LOSS-PROVISION>                                         0
<INTEREST-EXPENSE>                                 751,199
<INCOME-PRETAX>                                 25,785,222
<INCOME-TAX>                                     9,282,680
<INCOME-CONTINUING>                             16,502,542
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                    16,502,542
<EPS-PRIMARY>                                         0.42
<EPS-DILUTED>                                         0.42