EXHIBIT 21 SUBSIDIARIES OF TEKTRONIX, INC. an Oregon Corporation JURISDICTION NAME OF SUBSIDIARY ORGANIZED ------------------ ------------ Tektronix GmbH. Austria Tektronix N.V. Belgium Tektronix Industria e Comercio Ltda. Brazil Tektronix Canada Inc. Canada Tektronix Electronics (China) Co., Ltd. China Tektronix (China) Co., Ltd. China Tektronix (Yangzhong) Co., Ltd. China Tektronix A/S Denmark Tektronix Oy Finland Tektronix S.A. France Tektronix Berlin GmbH & Co. KG Germany Tektronix Berlin Verwaltungs GmbH Germany Tektronix GmbH Germany Tektronix Foreign Sales Corporation Guam Tektronix Distribution Europe BV Holland Tektronix Hong Kong Limited Hong Kong Tektronix Engineering Development (India) Limited India Tektronix (India) Limited India Tektronix Padova S.p.A. Italy Tektronix S.p.A. Italy Tektronix Japan Ltd. Japan Tektronix Korea, Ltd. Korea Tektronix, S.A. de C.V. Mexico Tektronix Holland B.V. The Netherlands Tektronix Polska Spx z o.o. Poland Tektronix Southeast Asia Pte Ltd Singapore Tektronix Espanola, S.A. Spain Tektronix AB Sweden Tektronix International A.G. Switzerland Tektronix International Sales GmbH Switzerland Tektronix Taiwan, Ltd. Taiwan Adherent Limited United Kingdom Tayvin 160 Limited United Kingdom Tektronix Cambridge Limited United Kingdom Tektronix Europe Limited United Kingdom Tektronix U.K. Limited United Kingdom Tektronix U.K. Holdings Limited United Kingdom Tektronix U K Development Centre Limited United Kingdom Impala Acquisition Co. LLC Delaware Impala Merger Corp. Delaware Maxtek Components Corporation Delaware Tektronix Asia, Ltd. Oregon Tektronix Development Company Oregon Tektronix Export, Inc. Oregon Tektronix Federal Systems, Inc. Oregon Tektronix International, Inc. Oregon