<ARTICLE>                     5
<LEGEND>
     THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE 
CONDENSED CONSOLIDATED BALANCE SHEET AT JUNE 28, 1998 AND THE CONDENSED 
CONSOLIDATED STATEMENT OF INCOME FOR THE SIX MONTHS ENDED JUNE 28, 1998 AND IS 
QUALIFIED IN ITS ENTIRETY BY REFERNECE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK>                         0000097210                         
<NAME>                        TERADYNE, INC.
<MULTIPLIER>                                   1,000
<CURRENCY>                                     U.S. DOLLARS
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                              DEC-31-1998
<PERIOD-START>                                 JAN-01-1998
<PERIOD-END>                                   JUN-28-1998
<EXCHANGE-RATE>                                1.00
<CASH>                                            67,308
<SECURITIES>                                      23,170
<RECEIVABLES>                                    356,975
<ALLOWANCES>                                       2,012
<INVENTORY>                                      348,503
<CURRENT-ASSETS>                                 862,327
<PP&E>                                           798,704
<DEPRECIATION>                                   384,997
<TOTAL-ASSETS>                                 1,370,516
<CURRENT-LIABILITIES>                            307,701
<BONDS>                                           13,046
<COMMON>                                          10,499
<PREFERRED-MANDATORY>                                  0
<PREFERRED>                                            0
<OTHER-SE>                                     1,015,841
<TOTAL-LIABILITY-AND-EQUITY>                   1,370,516
<SALES>                                          837,805
<TOTAL-REVENUES>                                 837,805
<CGS>                                            498,404
<TOTAL-COSTS>                                    712,752
<OTHER-EXPENSES>                                       0
<LOSS-PROVISION>                                       0
<INTEREST-EXPENSE>                                   513
<INCOME-PRETAX>                                  130,884
<INCOME-TAX>                                      41,883
<INCOME-CONTINUING>                               89,001
<DISCONTINUED>                                         0
<EXTRAORDINARY>                                        0
<CHANGES>                                              0
<NET-INCOME>                                      89,001
<EPS-PRIMARY>                                       1.06
<EPS-DILUTED>                                       1.04