Exhibit 21
Mentor Graphics Subsidiaries
Accelerated Technology (PVTD) Limited
Accelerated Technology S.A.
Anacad Electrical Engineer Software Ltd.
Descon Management GmbH
First Earth, Limited
Harness Software Limited
HSL Holdings Limited
IKOS (India) Pvt. Ltd.
IKOS Systems Limited
IKOS Systems Sarl
Ikos Systems, Inc.
Innoveda GmbH
Innoveda Korean Holdings, Inc.
Innoveda Limited
Innoveda SARL
Innoveda, Inc.
Mentor Design Systems Pte. Ltd.
Mentor Graphics (Asia) Pte Ltd
Mentor Graphics (Canada) Limited
Mentor Graphics (Denmark) A/S (Branch)
Mentor Graphics (Deutschland) GmbH
Mentor Graphics (Egypt)
Mentor Graphics (Espana) SA
Mentor Graphics (Finland) Oy
Mentor Graphics (France) Sarl
Mentor Graphics (France) Sede Italiania
Mentor Graphics (Holdings) Limited
Mentor Graphics (Hong Kong) Limited
Mentor Graphics (India) Private Limited
Mentor Graphics (Ireland) Limited
Mentor Graphics (Ireland) Limited, Danish Branch
Mentor Graphics (Ireland), Finnish Branch
Mentor Graphics (Ireland), French Branch
Mentor Graphics (Ireland), German Branch
Mentor Graphics (Ireland), Swedish Branch
Mentor Graphics (Ireland), Taiwan Branch
Mentor Graphics (Ireland), UK Branch
Mentor Graphics (Israel) Limited
Mentor Graphics (Japan) Co. Ltd.
Mentor Graphics (Netherlands Antilles) N.V.
Mentor Graphics (Netherlands) B.V.
Mentor Graphics (Scandinavia) AB
Mentor Graphics (Schweiz) AG
Mentor Graphics (Taiwan) Limited
Mentor Graphics (UK) Limited
Mentor Graphics Development (Ireland) Ltd
Mentor Graphics Europe BV
Mentor Graphics Ltd Bermuda
Mentor Graphics Polska
Mentor Graphics Shanghai Electronic Technology Co.
Mentor Korea Company, Limited
Meta Systems SARL
Microtec Israel
Seto System GmbH
Silicon Compiler BV
Systolic Technology Limited
Veribest International Ltd. UK