EXHIBIT 21
                                                                2001 Plexus 10-K

1.       Plexus Services Corp. ("Services"), a Nevada corporation and subsidiary
         of Plexus Corp.

         a.       Plexus Electronic Assembly Corp. ("PEAC"), a Nevada
                  corporation and subsidiary of Services

                  (i)      Plexus International Sales and Logistics, LLC
                           ("PISL"), a Delaware LLC and subsidiary of PEAC

                  (ii)     Plexus QS, LLC, ("PQS") a Delaware LLC and subsidiary
                           of PEAC

                  (iii)    Plexus South, S. de R.L. de C.V., ("PSS") a Mexico
                           entity and subsidiary of PISL and PQS

                  (iv)     Plexus Electronica S.de R.L. de C.V., a Mexico entity
                           and subsidiary of PSS and PQS

                  (v)      Plexus de Servicios Management, S.de R.L. de C.V., a
                           Mexico entity and subsidiary of PSS and PQS

                  (vi)     Plexus Servicios, S.de R.L. de C.V., a Mexico entity
                           and subsidiary of PSS and PQS

         b.       Plexus Technology Group, Inc., a Nevada corporation and
                  subsidiary of Services.

         c.       Plexus NPI Plus Corp., a Nevada corporation and subsidiary of
                  Services

2.       Plexus International Services, Inc. ("PISI"), a Nevada corporation and
         subsidiary of Plexus Corp.

         a.       Plexus Corp. Limited ("PCL"), a United Kingdom corporation and
                  subsidiary of PISI

                  (i)      Plexus Corp. (UK) Limited ("PCUKL"), a United Kingdom
                           corporation and subsidiary of PCL

                  (ii)     Plexus Corp. (Kelso) Limited, a United Kingdom
                           corporation and subsidiary of PCUKL

                  (iii)    Plexus Corp. (Maldon) Limited, a United Kingdom
                           corporation and subsidiary of PCUKL

         b.       Plexus Technology Group, Limited, a United Kingdom corporation
                  and subsidiary of PISI

         c.       Plexus International, LLC, an Oregon limited liability company
                  and subsidiary of PISI




3.       QTRON, Inc., a California corporation and subsidiary of Plexus Corp.

4.       Plexus ABS, Inc., a Nevada corporation and subsidiary of Plexus Corp.

5.       PTL Information Technology Services Corp., a Nevada corporation and
         subsidiary of Plexus Corp.

6.       Plexus Property Holding Corp., a Nevada corporation and subsidiary of
         Plexus Corp.