<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 REFERENCE 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
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        10,499
<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