| Atos HK Limited | Private company limited by shares | Dissolved |
| ATOS ELECTROHYDRAULICS HK LIMITED | Private company limited by shares | Dissolved |
| Atos Holding Hong Kong 1 Limited | | Live |
| Atos Credit System Limited | Private company limited by shares | Live |
| ATOS INFORMATION TECHNOLOGY HK LIMITED | Private company limited by shares | Live |
| ATOS H.K. TRADING LIMITED | Private company limited by shares | Live |
| ATOSHI LIMITED | Private company limited by shares | Live |
| ATOSS ASIA LIMITED | Private company limited by shares | Live |
| ATO-SYSTEM LIMITED | Private company limited by shares | Live |