| MANTEC LIMITED | Private company limited by shares | Live |
| MANTEC (ASIA) LIMITED | Private company limited by shares | Dissolved |
| MANTEC ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| MANTEC EXPRESS LIMITED | Private company limited by shares | Live |
| MANTEC INVESTMENT LIMITED | Private company limited by shares | Live |
| MANTEC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| MANTEC TRADING LIMITED | Private company limited by shares | Live |
| ITALY MANTECATINI SHOES CO., LIMITED | Private company limited by shares | Dissolved |
| MANTECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| MANTECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| MANTECH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MANTECH GROUP LIMITED | Private company limited by shares | Live |
| MANTECH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| MANTECH INVESTMENT LIMITED | Private company limited by shares | Live |
| MANTECH STRATEGIC LIMITED | Private company limited by shares | Live |
| MANTECH SYSTEM TECHNOLOGY LIMITED | Private company limited by shares | Live |
| MANTECH TRADING LIMITED | Private company limited by shares | Live |