| KEYSKY COMPANY, LIMITED | Private company limited by shares | Live |
| Keysky Management Limited | Private company limited by shares | Live |
| Keysky Finance Assets Management Limited | Private company limited by shares | Dissolved |
| KEYSMART LIMITED | Private company limited by shares | Dissolved |
| KEYSMART LIMITED | Private company limited by shares | Dissolved |
| KEYSMART INC LIMITED | Private company limited by shares | Live |
| KEYSMART CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| KEYSMART CORPORATION LIMITED | Private company limited by shares | Live |
| KEYSMART TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| KEYSMART DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| KEYSMART (HK) LIMITED | Private company limited by shares | Dissolved |
| KEYSMART HOLDINGS LIMITED | Private company limited by shares | Live |
| KEYSMART (HONGKONG) LIMITED | Private company limited by shares | Live |
| KEYSMART INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| KEYSMART INDUSTRIAL LIMITED | Private company limited by shares | Live |
| KEYSMART INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| KEYSMART INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| KEYSMART INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| KEYSMART TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| KEYSMART TRADING LIMITED | Private company limited by shares | Live Commenced dormancy on 09-Jun-2014 |
| Keysmash Limited | | Live |
| Keysmay (HK) Co., Limited | Private company limited by shares | Live |
| KEYSOC LIMITED | Private company limited by shares | Live |
| KEYSOFT LIMITED | Private company limited by shares | Dissolved |
| KEYSON & CO. LIMITED | Private company limited by shares | Live Commenced dormancy on 28-May-2003 |
| KEYSON CORPORATION LIMITED | Private company limited by shares | Live |
| Keyson Fitness Limited | Private company limited by shares | Live |
| Keyson Fitness NTK Limited | | Live |
| Keyson Fitness TM Limited | | Live |
| KEYSON INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| KEYSON INTERNATIONAL LIMITED | Private company limited by shares | Live |
| KEYSON INVESTMENT LIMITED | Private company limited by shares | Live |
| KEYSON MARKETING LIMITED | Private company limited by shares | Live |
| KEYSON TRADING LIMITED | Private company limited by shares | Dissolved |
| KEYSONIC LIMITED | Private company limited by shares | Dissolved |
| KEYSOUND INVESTMENTS LIMITED | Private company limited by shares | Live |
| KEYSOUND PRODUCTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| Keysound-mag Limited | | Live |
| KeySources Limited | Private company limited by shares | Live |
| KEYSOURCING LIMITED | Private company limited by shares | Live |
| KEYSPACE INCORPORATION LIMITED | Private company limited by shares | Live |
| KEYSPARK COMPANY LIMITED | Private company limited by shares | Dissolved |
| KEYSQUARE COMMUNICATION LIMITED | Private company limited by shares | Live |
| Keyssa Hong Kong Limited | Private company limited by shares | Live |
| KEYSTAR COMPANY, LIMITED | Private company limited by shares | Dissolved |
| KEYSTAR LIMITED | Private company limited by shares | Live |
| KEYSTAR ENTERPRISES LIMITED | Private company limited by shares | Live Commenced dormancy on 25-Jun-2015 |
| KeyStarter Limited | | Live |
| KEY-STATE INTERNATIONAL CORPORATION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| KEYSTER LAND INVESTMENT COMPANY LIMITED | Private company limited by shares | Live Commenced dormancy on 16-Apr-2008 |
| KEYSTON INVESTMENT LIMITED | Private company limited by shares | Live |
| KEYSTONE COMPANY LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE LIMITED | Private company limited by shares | Live |
| KEYSTONE HK LIMITED | Private company limited by shares | Live |
| KEYSTONE ASIA LIMITED | Private company limited by shares | Live |
| KEYSTONE CAPITAL LIMITED | Private company limited by shares | Live |
| HK KEYSTONE CAPITAL LIMITED | Private company limited by shares | Live |
| Keystone Catalyst Limited | Private company limited by shares | Live |
| Keystone Consultancy Limited | | Live |
| KEYSTONE DIGITAL COMPANY LIMITED | | Live |
| ARCH & Keystone Education Limited | Private company limited by shares | Live |
| KeyStone Enterprise Limited | Private company limited by shares | Dissolved |
| KEYSTONE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE ENTERPRISES HK LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE (F.E.) LIMITED | Private company limited by shares | Live |
| KEYSTONE HOLDING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Keystone Holding Limited | | Live |
| KEYSTONE CAPITAL HOLDING LIMITED | Private company limited by shares | Live |
| Keystone Innovations Limited | Private company limited by shares | Live |
| KeyStone Insurance Limited | Private company limited by shares | Live |
| KEYSTONE INSURANCE BROKERS LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE INTEGRATION LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Keystone Asia Investment HK Limited | Private company limited by shares | Live |
| Keystone Investments And Developments Pty Limited | Private company limited by shares | Live |
| KEYSTONE LEARNING LIMITED | Private company limited by shares | Dissolved |
| L.R. CAPITAL KEYSTONE INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| KEYSTONE MANAGMENT COMPANY LIMITED | Private company limited by shares | Live |
| North Haven Keystone Company Limited | Private company limited by shares | Live |
| Keystone Offshore Limited | | Live |
| Oriental Keystone Investment Limited | Private company limited by shares | Live |
| KEYSTONE ASIA PACIFIC INVESTMENTS LIMITED | Private company limited by shares | Live |
| KEYSTONE PROJECTS LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE RESOURCES LIMITED | Private company limited by shares | Live |
| KEYSTONE SHIPPING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE SHIPPING COMPANY, LIMITED -THE- | Private company limited by shares | Dissolved |
| KeyStone Solutions Limited | Private company limited by shares | Live |
| KEYSTONE SPECIALITY INGREDIENTS LIMITED | Private company limited by shares | Live |
| KEYSTONE SYNDICATE LIMITED | Private company limited by shares | Dissolved |
| KEYSTONE TOBACCO COMPANY, LIMITED | Company limited by guarantee | Dissolved |
| KEYSTONE UNDERWRITERS LIMITED | Private company limited by shares | Live |
| Central United Keystone Group Limited | Private company limited by shares | Live |
| Keystone Wealth Limited | Private company limited by shares | Live |
| Keystoners Company Limited | Private company limited by shares | Live |
| KEYSTONES COMPANY LIMITED | Private company limited by shares | Dissolved |
| Keystones Limited | Private company limited by shares | Live |
| KEYSTONES REALTY LIMITED | Private company limited by shares | Live |