<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET OF INSIGHT ENTERPRISES, INC. AND SUBSIDIARIES AS OF
DECEMBER 31, 1999 AND THE RELATED CONSOLIDATED STATEMENT OF EARNINGS FOR THE
12 MONTHS ENDED DECEMBER 31, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FORM 10-K FOR THE 12 MONTH PERIOD ENDING DECEMBER 31, 1999.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                          66,675
<SECURITIES>                                         0
<RECEIVABLES>                                  210,187
<ALLOWANCES>                                     9,277
<INVENTORY>                                     18,923
<CURRENT-ASSETS>                               293,313
<PP&E>                                          70,563
<DEPRECIATION>                                  14,127
<TOTAL-ASSETS>                                 375,382
<CURRENT-LIABILITIES>                          151,786
<BONDS>                                         14,832
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           268
<OTHER-SE>                                     208,496
<TOTAL-LIABILITY-AND-EQUITY>                   375,382
<SALES>                                      1,518,369
<TOTAL-REVENUES>                             1,518,369
<CGS>                                        1,337,370
<TOTAL-COSTS>                                1,337,370
<OTHER-EXPENSES>                               117,450
<LOSS-PROVISION>                                 5,749
<INTEREST-EXPENSE>                               1,025
<INCOME-PRETAX>                                 56,775
<INCOME-TAX>                                    23,188
<INCOME-CONTINUING>                             33,587
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    33,587
<EPS-BASIC>                                       1.30
<EPS-DILUTED>                                     1.25