| ULTRAMAR LIMITED | Private company limited by shares | Dissolved |
| AIM Ultramar Limited | Private company limited by shares | Dissolved |
| 135 MILES INTERNATIONAL SUPER ULTRAMARATHON (WORLD) ASSOCIATION LIMITED | Private company limited by shares | Live |
| Ultramarch International Company Limited | Private company limited by shares | Live |
| ULTRAMARINE LIMITED | Private company limited by shares | Live |
| Ultramarine Cie Limited | Private company limited by shares | Live |
| ULTRAMARINE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ULTRA-MARINE TRADING COMPANY LIMITED | Private company limited by shares | Live |
| ULTRAMARINE VIEW LIMITED | Private company limited by shares | Dissolved |
| ULTRA-MARK INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |