| Trinity Uniform Company Limited | Private company limited by shares | Live |
| Trinity Uppsala Limited | Private company limited by shares | Live |
| VAST TRINITY LIMITED | Private company limited by shares | Live |
| WEALTHY TRINITY LIMITED | Private company limited by shares | Dissolved |
| Trinity54 Limited | | Live |
| TRINITY-C MANAGEMENT LIMITED | Private company limited by shares | Live |
| Trinitydigit Incorporated Limited | | Live |
| TRINITYHEALTH MEDICAL CENTRE (TSIM SHA TSUI) LIMITED | Private company limited by shares | Live |
| Trinityservices Limited | Private company limited by shares | Live |
| Trinity-Tec Global Limited | | Live |
| TRINITYWELL ADVERTISING LIMITED | Private company limited by shares | Live |
| TRINIX LIMITED | Private company limited by shares | Live |