EXHIBIT 21.1

Subsidiaries of the Registrant	Jurisdiction of Incorporation
Apache Design, Inc.	Delaware
SAS IP, Inc.	Wyoming
ANSYS Canada Limited	Ontario
2011767 Ontario, Inc.	Ontario
ANSYS Belgium, S.A.	Belgium
ANSYS France SAS	France
Apache Design Solutions Sarl.	France
ANSYS Germany GmbH	Germany
Apache Design Solutions GmbH	Germany
ANSYS Iberia S.L.	Spain
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
Apache Design Solutions Ltd.	United Kingdom
ANSYS Japan K.K.	Japan
Apache Design Solutions K.K.	Japan
Apache Design Solutions Yuhan Hoesa	Korea
Apache Design Solutions Pte. Ltd.	Singapore
Apache Design Solutions Inc.	Taiwan
Fluent China Holdings Limited	Barbados
Fluent Software (Shanghai) Co., Limited	People’s Republic of China
ANSYS-Fluent (Shanghai) Engineering Software Trading Co., Ltd.	People’s Republic of China
Apache Science and Technology (Shanghai) Co. Ltd.	People’s Republic of China
Apache Design Solutions, Inc.	People’s Republic of China
ANSYS Hong Kong Ltd.	Hong Kong
ANSYS Software Private Limited	India
Fluent India Private Limited	India
Apache Design Solutions Private Ltd.	India
Sequence Design India Private Ltd.	India
Apache Power Solutions Israel Ltd.	Israel
ANSYS OOO	Russia
Silver Nugget Limited*	United Kingdom

* Inactive subsidiary