2018 Top 100
21: MANTECH INTERNATIONAL
| Top 100 Revenue: | $1,465,647,000 |
| Defense Revenue: | $1,193,671,000 |
| Civilian Revenue: | $271,976 ,000 |
| 2017 Revenue: | N/A |
| 2017 Earnings: | N/A |
| 2016 Revenue: | N/A |
| 2016 Earnings: | N/A |
| Number of employees: | N/A |
| Headquarters: | Herndon, Virginia |
| Website: | https://www.mantech.com/ |
| Leadership: | N/A |
| Ticker: | Privately held |
| Lines of business: | N/A |
| Major customers: | N/A |
| Major contracts/projects: | N/A |
