<ARTICLE>                     5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONDENSED STATEMENT OF INCOME FOR THE THREE MONTHS ENDED MARCH 31, 1997
AND THE CONDENSED BALANCE SHEET AS OF MARCH 31, 1997 AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK>                         0000926282
<NAME>                        ADTRAN, INC.
<MULTIPLIER>                  1
<CURRENCY>                    US DOLLAR
       
                           
<PERIOD-TYPE>                 3-MOS
<FISCAL-YEAR-END>             DEC-31-1997
<PERIOD-START>                JAN-01-1997
<PERIOD-END>                  MAR-31-1997
<EXCHANGE-RATE>               1
<CASH>                                         $49,542,844
<SECURITIES>                                    30,550,210
<RECEIVABLES>                                   33,575,563
<ALLOWANCES>                                      (870,842)
<INVENTORY>                                     48,082,345
<CURRENT-ASSETS>                               164,739,843
<PP&E>                                          75,130,234
<DEPRECIATION>                                 (15,350,751)
<TOTAL-ASSETS>                                 224,519,326
<CURRENT-LIABILITIES>                           20,295,962
<BONDS>                                         20,000,000
<PREFERRED-MANDATORY>                                    0
<PREFERRED>                                              0
<COMMON>                                           392,027
<OTHER-SE>                                     182,229,221
<TOTAL-LIABILITY-AND-EQUITY>                   224,519,326
<SALES>                                         61,230,184
<TOTAL-REVENUES>                                61,230,184
<CGS>                                           29,438,797
<TOTAL-COSTS>                                   29,438,797
<OTHER-EXPENSES>                                10,537,516
<LOSS-PROVISION>                                         0
<INTEREST-EXPENSE>                                 242,534
<INCOME-PRETAX>                                 14,878,545
<INCOME-TAX>                                     5,356,277
<INCOME-CONTINUING>                              9,522,269
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                     9,522,269
<EPS-PRIMARY>                                         0.24
<EPS-DILUTED>                                         0.24