<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET AND INCOME STATEMENT OF TYCO INTERNATIONAL LTD. AS OF AND FOR THE SIX
MONTHS ENDED MARCH 31, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS.


                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-END>                               MAR-31-2000
<CASH>                                       1,139,600
<SECURITIES>                                         0
<RECEIVABLES>                                5,775,400
<ALLOWANCES>                                   394,400
<INVENTORY>                                  3,480,500
<CURRENT-ASSETS>                            11,705,700
<PP&E>                                      14,030,000
<DEPRECIATION>                               6,102,100
<TOTAL-ASSETS>                              36,209,200
<CURRENT-LIABILITIES>                        9,658,300
<BONDS>                                     10,807,800
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       337,600
<OTHER-SE>                                  13,427,100
<TOTAL-LIABILITY-AND-EQUITY>                36,209,200
<SALES>                                     13,708,700
<TOTAL-REVENUES>                            13,708,700
<CGS>                                        8,647,200
<TOTAL-COSTS>                                8,647,200
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                30,165
<INTEREST-EXPENSE>                             400,200
<INCOME-PRETAX>                              2,159,300
<INCOME-TAX>                                   546,600
<INCOME-CONTINUING>                          1,612,700
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                  (200)
<CHANGES>                                            0
<NET-INCOME>                                 1,612,500
<EPS-BASIC>                                       0.97
<EPS-DILUTED>                                     0.96