General Inquiries

Corporate Headquarters 
ManTech International Corporation 
2251 Corporate Park Drive
Herndon, VA 20171
Phone: (703) 218-6000 ​​


Investor Relations

Phone: (703) 218-8269
Email: [email protected]


Small Business Office

Maria Palao
Phone: (703) 218-6077


Media Inquiries

Jim Crawford, Executive Director – Media Relations
Phone: (571) 446-7550


GSA and GWAC Inquiries

[email protected] 


Employment Verifications

Phone: (800) 800-4857 - ManTech Company Code: 36092
https://www.theworknumber.com


Careers/Employment Inquiries

Phone: (855) 849-6020
Email: [email protected]