EXHIBIT 21 CTS CORPORATION AND SUBSIDIARIES CTS Corporation (Registrant), an Indiana corporation Subsidiaries CTS Corporation (Delaware), a Delaware corporation CTS of Panama, Inc., a Republic of Panama corporation CTS Components Taiwan, Ltd.,1 a Taiwan, Republic of China corporation CTS Singapore Pte., Ltd., a Republic of Singapore corporation CTS Electro de Matamoros, S.A.,1 a Republic of Mexico corporation CTS Export Corporation, a Virgin Islands corporation CTS Japan, Inc., a Japan corporation CTS of Canada, Ltd., a Province of Ontario (Canada) corporation CTS Manufacturing (Thailand) Ltd., 1 a Thailand corporation CTS Electronics Hong Kong Ltd., 1 a Hong Kong corporation CTS Corporation U.K. Ltd., a United Kingdom corporation CTS Printex, Inc., a California corporation CTS Micro Peripherals, Inc., a California corporation CTS First Acquisition Corporation, a New York corporation Corporations whose names are indented are subsidiaries of the preceding non-indented corporations. Except as indicated, each of the above subsidiaries is 100% owned by its parent company. Operations of all subsidiaries and divisions are consolidated in the financial statements filed. 1 Less than 1% of the outstanding shares of stock is owned of record by nominee shareholders pursuant to national laws regarding resident or nominee ownership.