EXHIBIT 21

Subsidiaries of the Registrant	Jurisdiction of Incorporation
SAS IP, Inc.	Wyoming
ANSYS Canada Limited	Ontario
2011767 Ontario, Inc.	Ontario
ANSYS Belgium, S.A.	Belgium
ANSYS France SAS	France
Ansoft France SAS	France
ANSYS Germany GmbH	Germany
ANSYS Italia, Srl.	Italy
ANSYS Luxembourg Holding Company Sarl	Luxembourg
ANSYS Sweden, AB	Sweden
ANSYS UK Limited	United Kingdom
Century Dynamics, Limited	United Kingdom
ANSYS UK Holding Company Limited	United Kingdom
ANSYS UK Simulation Software Limited	United Kingdom
ANSYS Japan K.K.	Japan
Fluent China Holdings Limited	Barbados
Fluent Software (Shanghai) Co., Limited	Peoples Republic of China
ANSYS-Fluent (Shanghai) Engineering Software Trading Co., Ltd.	Peoples Republic of China
ANSYS Hong Kong Ltd.	Hong Kong
ANSYS Software Private Limited	India
Fluent India Private Limited	India
CFX Limited*	United Kingdom
Fluent Europe Limited*	United Kingdom
Silver Nugget Limited*	United Kingdom
ANSYS Europe Limited*	United Kingdom

* Inactive subsidiaries