| SUMO LIMITED | Private company limited by shares | Dissolved |
| HOT SUMO LIMITED | Private company limited by shares | Live |
| Sumo DND Limited | Private company limited by shares | Live |
| SUMO (ASIA) LIMITED | Private company limited by shares | Live |
| SUMO ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| SUMO CORPORATION LIMITED | Private company limited by shares | Live |
| SUMO ELECTRIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA HONG KONG SUMO FUND LIMITED | Private company limited by shares | Dissolved |
| SUMO Global Limited | Private company limited by shares | Live |
| SUMO GROUP COMPANY LIMITED | Private company limited by shares | Live |
| SUMO PACIFIC (HK) LIMITED | Private company limited by shares | Live |
| HONG KONG SUMO ASSOCIATION LIMITED | Company limited by guarantee | Live |
| SUMO HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SUMO HONGKONG TRADE CO., LIMITED | Private company limited by shares | Live |
| Sumo International Limited | Private company limited by shares | Live |
| SUMO INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Live |
| SUMO INTERNATIONAL CORPORATION LIMITED | Private company limited by shares | Dissolved |
| Sumo Investment Holding Limited | Private company limited by shares | Live |
| SUMO LEARNING CENTRE LIMITED | | Live |
| SUMO LIGHT COMPANY LIMITED | Private company limited by shares | Live |
| Sumo Asset Management Limited | Private company limited by shares | Live |
| SUMO RESOURCES LIMITED | Private company limited by shares | Live |
| HK Sumo Automation Technology Limited | Private company limited by shares | Live |
| Sumo Wealth Limited | Private company limited by shares | Live |
| SUMOCEPT LIMITED | Private company limited by shares | Dissolved |
| SUMOI Culture Limited | | Live |
| SUMOKI LIMITED | Private company limited by shares | Dissolved |
| SUMON LIMITED | Private company limited by shares | Dissolved |
| SUMOON INT'L (HK) LIMITED | Private company limited by shares | Live |
| SUMOPARK LIMITED | Private company limited by shares | Live |
| SUMORE LIMITED | Private company limited by shares | Dissolved |
| SUMORE CORPORATION LIMITED | Private company limited by shares | Live |
| SUMORI NISEKO LIMITED | Private company limited by shares | Live |
| Sumoss Living Co., Limited | Private company limited by shares | Live |
| SUMOTA LIMITED | Private company limited by shares | Dissolved |
| SUMOTAR LIMITED | Private company limited by shares | Dissolved |
| SUMOTE CO., LIMITED | Private company limited by shares | Live |
| Sumoy Limited | | Live |