| M.U. INDUSTRIAL (HK) LIMITED | Private company limited by shares | Dissolved |
| M.U. CAMBRIDGE INSURANCE CO. (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| M.U. PROGRESSIVE INSURANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| M.U. RELIANCE INSURANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| MU5117 LIMITED | Private company limited by shares | Live |
| Mu77 Network Technology Hongkong Limited | Private company limited by shares | Live |
| MU852 Limited | Private company limited by shares | Live Commenced dormancy on 17-Nov-2015 |
| MUAC DESIGN ARCHITECTS LIMITED | Private company limited by shares | Live |
| HONGKONG MUAERLA BIOTECHNOLOGY LIMITED | Private company limited by shares | Live |
| Muah Ma Limited | Private company limited by shares | Live |
| Muah Limited | | Live |
| HK MUAI BIOTECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| HK MUAI HOUSEKEEPING SERVICE CO., LIMITED | Private company limited by shares | Live |
| MUAI (CHINA) FINERY LIMITED | Private company limited by shares | Dissolved |
| MUAI TRADING LIMITED | | Live |
| MuaJia Trading Limited | Private company limited by shares | Live |
| MUAND HOLDINGS LIMITED | Private company limited by shares | Live |
| Muangngern Enterprise Company Limited | Private company limited by shares | Dissolved |
| MUAP INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MUAP TRAVEL LIMITED | Private company limited by shares | Dissolved |
| SLM MUAR TRADING LIMITED | | Live |
| YODKUMARN MUAY THAI ACADEMY LIMITED | Private company limited by shares | Live |
| Chang Muay Thai Company Limited | | Live |
| Eagle Muay Thai Gym Limited | Private company limited by shares | Live |
| Exceed Muay Thai & Fitness Limited | | Live |
| Faith Muay Thai & Fitness Limited | | Live |
| FANTASY FITNESS AND MUAY THAI LIMITED | Private company limited by shares | Live |
| Fung Muay Thai & Fitness Limited | Private company limited by shares | Live |
| HONG KONG MUAY THAI FEDERATION LIMITED -THE- | Company limited by guarantee | Dissolved |
| (China) International Muay Thai Association Limited | | Live |
| The King of Kings Muay Thai Limited | | Live |
| Rank King Muay Thai and Fitness Limited | Private company limited by shares | Live |
| SILVER RING MUAY THAI LIMITED | Private company limited by shares | Live |
| Kru Muay Thai Limited | Private company limited by shares | Live |
| Gik Muay Thai Co. Limited | Private company limited by shares | Live |
| MUAY THAI LIMITED | Private company limited by shares | Live |
| Muay Thai Guy Limited | Private company limited by shares | Live |
| Sho Muay Thai Gym Limited | Private company limited by shares | Live |
| FOX MUAY THAI LIMITED | | Live |
| CAVE MUAY THAI LIMITED | | Live |
| Chain Muay Thai Fitness Limited | Private company limited by shares | Live |
| Chain S Muay Thai Fitness Limited | Private company limited by shares | Live |
| CHOK MUAY THAI CO., LIMITED | Private company limited by shares | Live |
| Dare Muay Thai Limited | | Live |
| FIGHTING PRO MUAY THAI FITNESS LIMITED | Private company limited by shares | Live |
| Ten To One Muay Thai and Fitness Limited | Private company limited by shares | Live |
| Top Muay Thai & Fitness Company Limited | | Live |
| Ocean Muay Thai & Fitness Limited | Private company limited by shares | Live |
| Greater Bay Area Muay Thai Association Company Limited | | Live |
| NUMBER 9 MUAY THAI GYM LIMITED | | Live |
| Singsarawat Muay Thai Company Limited | | Live |
| Super Muay Thai Limited | Private company limited by shares | Live |
| Technique Muay Thai plus MMA Gym Limited | Private company limited by shares | Live |
| XTREME MUAY THAI LIMITED | Private company limited by shares | Live |
| WORLD MUAY THAI ASSOCIATION LIMITED | Private company limited by shares | Live |
| X-BATTLE MUAY THAI & FITNESS LIMITED | Private company limited by shares | Live |
| Zero Muay Thai and Fitness Limited | Private company limited by shares | Live |
| BILL'S MUAYTHAI LIMITED | Private company limited by shares | Live |
| Brothers Muaythai Limited | Private company limited by shares | Live |
| Muaythai Centre Limited | Private company limited by shares | Live |
| UHC MUAYTHAI AND FITNESS LIMITED | Private company limited by shares | Live |
| HIN MUAYTHAI & FITNESS GYM LIMITED | Private company limited by shares | Live |
| MUAYTHAI GEAR LIMITED | Private company limited by shares | Live |
| Hing MuayThai Gym Limited | | Live |
| Kwoon Muaythai and Boxing Fitness Limited | Private company limited by shares | Live |
| All Might MuayThai & Fitness Limited | | Live |
| Rays Muaythai Gym Limited | Private company limited by shares | Live |
| YOU CAN BE MUAYTHAI SCHOOL LIMITED | | Live |
| SPIRIT MUAYTHAI & FITNESS LIMITED | Private company limited by shares | Live |
| MUAYTHAI STATION LIMITED | Private company limited by shares | Live |
| MUAYTHAI STATION & FITNESS LIMITED | Private company limited by shares | Dissolved |
| Wizard MuayThai Gym HK Limited | | Live |
| MUBAI TRADING LIMITED | Private company limited by shares | Live |
| CHINA MUBANG AGRICULTURAL MATERIAL INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Dissolved |
| MUBE LIMITED | Private company limited by shares | Dissolved |
| AL MUBEEN TRADING HK LIMITED | Private company limited by shares | Live |
| HK (CHINA) MUBEN WOODEN INDUSTRIES CO., LIMITED | Private company limited by shares | Dissolved |
| Mubi Limited | Private company limited by shares | Live |
| MUBI (HK) Limited | Private company limited by shares | Live |
| MUBI TRADING COMPANY LIMITED | | Live |
| MUBIE HK LIMITED | Private company limited by shares | Dissolved |
| MUBIQUO ASIA LIMITED | Private company limited by shares | Live |
| FOTIADIS MUBKAR LIMITED | Private company limited by shares | Live |
| MUCA PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| FAR EAST MUCASO TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| DI MUCCI LIMITED | Private company limited by shares | Live |
| Mucci Trading Co., Limited | Private company limited by shares | Live |
| Mucci Consulting Service Limited | | Live |
| Muccy Technology (HK) Co., Limited | Private company limited by shares | Live |
| HONGKONG MUCCY FASHION INTERNATION CO., LIMITED -THE- | Private company limited by shares | Live |
| HONGKONG MUCCY TECHNOLOGY GROUP LIMITED | Private company limited by shares | Live |
| MUCENDY LIMITED | Private company limited by shares | Dissolved |
| HOW MUCH LIMITED | Private company limited by shares | Live |
| JOY MUCH LIMITED | Private company limited by shares | Dissolved |
| JOY MUCH LIMITED | Private company limited by shares | Live |
| Much Limited | Private company limited by shares | Live |
| not much Limited | Private company limited by shares | Live |
| So Much So Much Limited | Private company limited by shares | Live |
| SO MUCH JOY LIMITED | | Live |
| MUCH BLOOM COMPANY LIMITED | Private company limited by shares | Live |