| TESO LIMITED | Private company limited by shares | Dissolved |
| TESO.ADD COMPANY LIMITED | Private company limited by shares | Live |
| Tesok Limited | Private company limited by shares | Live |
| TESOLCO INTERNATIONAL LIMITED | Private company limited by shares | Live |
| TESON LIMITED | Private company limited by shares | Dissolved |
| TESONIC-SOLIDEX LIMITED | Private company limited by shares | Dissolved |
| Tesoonca Leather Limited | Private company limited by shares | Live |
| Tesora Company Limited | Private company limited by shares | Live |
| TESORERIA LIMITED | Private company limited by shares | Dissolved |
| TESORINO LIMITED | Private company limited by shares | Dissolved |
| TESORO LIMITED | Private company limited by shares | Live |
| Tesoro VL Limited | Private company limited by shares | Live |
| Tesoro Asia Co Limited | Private company limited by shares | Live |
| Tesoro Expert Limited | Private company limited by shares | Live |
| TESORO FINANCE & INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| Tesoro Holding Company Limited | Private company limited by shares | Live |
| TESORO ITALIANO LIMITED | Private company limited by shares | Live |
| Tesoura Limited | Private company limited by shares | Dissolved |