| TREST GROUP LIMITED | Private company limited by shares | Live |
| GROUP TREST COMPANY LIMITED | Private company limited by shares | Live |
| TRESTAR LIMITED | Private company limited by shares | Live |
| TRES-THOMSON INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| TRESTLE BRIDGE FINANCIAL HOLDING LIMITED | Private company limited by shares | Live |
| Trestle Trading Co., Limited | | Live |
| Trestle Corporation Limited | Private company limited by shares | Live |
| TRESTLE GROUP LIMITED | Private company limited by shares | Live |
| Trestle Investment Management Limited | Private company limited by shares | Live |
| TRESTON LIMITED | Private company limited by shares | Dissolved |