| WISE SUMMIT LIMITED | Private company limited by shares | Live |
| WORTH SUMMIT LIMITED | Private company limited by shares | Live |
| Summita Meta Trading Pty Limited | | Live |
| SUMMITAK INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SUMMITBIOTECK CO., LIMITED | Private company limited by shares | Live |
| SUMMITCO (TONG YANG) LIMITED | Private company limited by shares | Dissolved |
| SUMMITECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMMITEX MANUFACTURERS LIMITED | Private company limited by shares | Live |
| SUMMITHILL LIMITED | Private company limited by shares | Dissolved |
| SUMMITHOBBY MODEL CO., LIMITED | Private company limited by shares | Dissolved |
| SUMMITOP LIMITED | Private company limited by shares | Dissolved |
| SUMMITOP (H.K.) INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| SUMMITOP INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SummitPeak Limited | | Live |
| SUMMITS COMPANY LIMITED | Private company limited by shares | Live |
| SKY SUMMITS LIMITED | Private company limited by shares | Dissolved |
| SKY SUMMITS LIMITED | Private company limited by shares | Dissolved |
| WHY SUMMITS LIMITED | Private company limited by shares | Live |
| SUMMITS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| BEST SUMMITS LIMITED | Private company limited by shares | Live Commenced dormancy on 03-Jan-2013 |
| SUMMITS ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| BEST SUMMITS INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Summitslate Limited | Private company limited by shares | Live |
| SummitView Investment Limited | Private company limited by shares | Live |
| Summo International Co., Limited | | Live |
| SUMMOR FASHION LIMITED | Private company limited by shares | Live |
| Summus Limited | Private company limited by shares | Live |
| Summus All-in-one Limited | | Live |
| SUMMUS DIGITAL AND COMPANY LIMITED | | Live |
| SUMMUS ENTERPRISE LIMITED | Private company limited by shares | Live |
| SUMMUS ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| Summus Faye Limited | Private company limited by shares | Live |
| SUMMUS GROUP LIMITED | Private company limited by shares | Live |
| SUMMUS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SUMMUS LIMOUSINE SERVICES LIMITED | Private company limited by shares | Live |
| Summus Travel Limited | Private company limited by shares | Live |
| Summus Ventures Limited | Private company limited by shares | Live |
| Sum Summy Limited | | Live |
| SUMMY ENTERPRISES LIMITED | Private company limited by shares | Live |
| SUMNER LIMITED | Private company limited by shares | Dissolved |
| A J SUMNER ASSOCIATES LIMITED | Private company limited by shares | Live |
| Sumner Automation Limited | Private company limited by shares | Live |
| SUMNIM HK LIMITED | Private company limited by shares | Live |
| SUMNINE LIMITED | | Live |
| 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 |
| SUMPARK ENTERPRISES COMPANY LIMITED | Private company limited by shares | Live |
| SUMPER GLOBAL TRADE LIMITED | | Live |
| SUMPINE INTERNATIONAL LIMITED | | Live |
| SUMPOFAT COMPANY LIMITED | Private company limited by shares | Dissolved |
| SumPositive Limited | Private company limited by shares | Live |
| SUMPOST CONSTRUCTION & DEVELOPMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUMPTUARY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SUMPTUOUS COMPANY LIMITED | Private company limited by shares | Live |
| SUMPTUOUS LIMITED | | Live |
| SUMPTUOUS (HONG KONG) CITY SERVICE LIMITED | Private company limited by shares | Dissolved |
| Sumptuous Construction Engineering Company Limited | Private company limited by shares | Live |
| SUMPTUOUS DRAGON ENGINEERING HOLDING LIMITED | Private company limited by shares | Live |
| Sumptuous Garden Limited | Private company limited by shares | Live |
| SUMPTUOUS EXTEND (HK) LIMITED | Private company limited by shares | Dissolved |
| HONGKONG SUMPTUOUS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Sumptuous Wines and Spirits Company Limited | Private company limited by shares | Live |
| SUMPU INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SUMPU INTERNATIONAL LIMITED | Private company limited by shares | Live |