EXHIBIT 21.0

Subsidiaries of FLIR Systems, Inc.

• FLIR Systems Ltd., a United Kingdom Corporation

• FLIR Systems CV, a Netherlands Corporation

• FLIR Systems Ltd., a Canadian Corporation

• FLIR Commercial Systems, Inc., a California, USA Corporation

• Scientific Materials Corporation, a Montana, USA Corporation

• FSI Holdings, Inc., an Oregon, USA Corporation

• FLIR Systems Aviation, LLC, an Oregon, USA Limited Liability Company

• Extech Instruments Corporation, a Massachusetts, USA Corporation

• FLIR Systems Middle East FZE, a United Arab Emirates Limited Liability Company

• FLIR Government Systems, Inc., a Delaware, USA Corporation

• FLIR Advanced Imaging Systems, Inc., a Delaware, USA Corporation