| SOUTHWORTH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SOUTHXIN LIMITED | Private company limited by shares | Live |
| SOUTHYANK LIMITED | Private company limited by shares | Dissolved |
| SOUTIANXIA CHAIN LIMITED | Private company limited by shares | Live |
| SoutinPro Technology Limited | | Live |
| SouTraCon Limited | Private company limited by shares | Dissolved |
| SOUTSHORE LIMITED | Private company limited by shares | Live |
| USA SOUTU LIMITED | Private company limited by shares | Live |
| Soutuan Travel Limited | Private company limited by shares | Dissolved |