EX-21.1 7 dex211.txt EXHIBIT 21.1 Exhibit 21.1 Subsidiaries of ManTech International Corporation ------------------------------------------------- Catalyst Australia Pty. Ltd., a corporation organized under the laws of Australia Catalyst Business Systems Ltd., a corporation organized under the laws of New Zealand Catalyst Business Systems Pty. Ltd., a corporation organized under the laws of Australia Catalyst Software Pty. Ltd., a corporation organized under the laws of Australia Field Support Services Muhendislik Ltd. Sti., a corporation organized under the laws of Turkey ManTech Advanced Development Group, Inc., a California corporation ManTech Advanced Recognition Limited, a corporation organized under the laws of the United Kingdom ManTech Advanced Systems International, Inc., a Virginia corporation ManTech Australia International, Inc., a Virginia corporation ManTech Automation Systems (Beijing) Co., Ltd., a corporation organized under the laws of China ManTech China Systems Corporation, a Virginia corporation ManTech Database Services Europe Limited, a corporation organized under the laws of the United Kingdom ManTech Enterprise Solutions, Inc., a Virginia corporation ManTech Environmental Corporation, a Virginia corporation ManTech Environmental Research Services Corporation, a Virginia corporation ManTech Environmental Technology, Inc., a Virginia corporation ManTech Europe Limited, a corporation organized under the laws of the United Kingdom ManTech Germany Systems Corporation, a Virginia corporation ManTech Praxa International Corporation, a Virginia corporation ManTech Security Technologies Corporation, a Virginia corporation ManTech Solutions Corporation, a Virginia corporation ManTech Solutions & Technologies Corporation, a Virginia corporation ManTech Support Technologies, Inc., a Virginia corporation ManTech Systems Corporation, a New Jersey corporation ManTech Systems Engineering Corporation, a Virginia corporation ManTech Systems Solutions Corporation, a Virginia corporation ManTech Telecommunications and Information Systems Corporation, a Delaware corporation ManTech Test Systems, Inc., a Virginia corporation ManTech U.K. Systems Corporation, a Virginia corporation MASI U.K. Limited, a corporation organized under the laws of the United Kingdom NSI Environmental Solutions, Inc., a Virginia corporation NSI Technology Services Corporation, a California corporation Praxa Limited, a corporation organized under the laws of Australia Praxa Limited, a corporation organized under the laws of New Zealand Praxa Software Pty. Ltd., a corporation organized under the laws of Australia Praxa Telecommunications Pty. Ltd., a corporation organized under the laws of Australia Redesmundial, S.A., a corporation organized under the laws of the Republic of Panama Science, Engineering & Analysis, Incorporated, a Virginia corporation Technology Management Corporation, a Virginia corporation VOBIX Corporation, a Virginia corporation