2021 Top 100
26: ManTech International Corp.
| Top 100 Revenue: | $1,309,677,000 |
| Defense Revenue: | $560,222,000 |
| Civilian Revenue: | $699,455,000 |
| 2020 Revenue: | N/A |
| 2020 Earnings: | N/A |
| 2019 Revenue: | $2.2 billion |
| 2019 Earnings: | $113.3 million |
| Number of employees: | N/A |
| Headquarters: | Fairfax, Va. |
| Website: | www.mantech.com |
| Leadership: | N/A |
| Ticker: | MANT |
| Lines of business: | N/A |
| Major customers: | N/A |
| Major contracts/projects: | N/A |