| Hongkong Mercury Co., Limited | Private company limited by shares | Live |
| MERCURY COMPUTER SYSTEMS (HONGKONG) LIMITED | Private company limited by shares | Live |
| MERCURY EDUCATION INVESTMENT (HONGKONG) CO., LIMITED | Private company limited by shares | Dissolved |
| MERCURY BUSINESS GROUP (HONGKONG) LIMITED | Private company limited by shares | Live |
| HONGKONG MERCURY GROUP CO., LIMITED | Private company limited by shares | Live |
| HONGKONG MERCURY STAGE LIGHTING CO., LIMITED | Private company limited by shares | Live |
| Hongkong YB Mercury Technology Co., Limited | | Live |
| HongKong Mercury Technology Textile Limited | Private company limited by shares | Live |
| HongKong Mercury International Trading Company Limited | Private company limited by shares | Live |
| OLD MERCURY HOUSE LIMITED | Private company limited by shares | Dissolved |
| HOUSE OF MERCURY LIMITED | Private company limited by shares | Live Commenced dormancy on 20-Jun-2012 |
| House of Mercury Asia Limited | Private company limited by shares | Live |
| Mercury Production House Limited | Private company limited by shares | Live |
| MERCURY IMPORT AND EXPORT LIMITED | Private company limited by shares | Dissolved |
| Mercury Import and Export Company Limited | Private company limited by shares | Live |
| HONG KONG MERCURY IMPORT AND EXPORT COMPANY LIMITED | Private company limited by shares | Live |
| MERCURY INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| MERCURY INDUSTRIAL LIMITED | Private company limited by shares | Live |
| DIAMOND MERCURY INDUSTRIAL LIMITED | Private company limited by shares | Live |
| MASTER MERCURY INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| MERCURY INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| ORIENT MERCURY INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| Infinitus Mercury Production Limited | Private company limited by shares | Live |
| MERCURY INNOVATIONS LIMITED | Private company limited by shares | Live |
| MERCURY INTELLIGENCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| MERCURY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MERCURY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MERCURY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Mercury International Limited | | Live |
| 21Vianet Mercury International Investment Limited | Private company limited by shares | Live |
| South Mercury International Trading Co., Limited | Private company limited by shares | Live |
| MERCURY INTERNATIONAL COMMERCE LIMITED | Private company limited by shares | Live |
| Mercury Consulting International Limited | | Live |
| MERCURY INTERNATIONAL DEVELOPMENT CO., LIMITED | Private company limited by shares | Live |
| Mercury P. International Diamond Limited | Private company limited by shares | Live |
| Mercury Dynamic International Limited | Private company limited by shares | Live |
| MERCURY INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MERCURY EXPRESS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| MERCURY FASHION INTERNATIONAL TRADING CO., LIMITED | | Live |
| MERCURY INTERNATIONAL FINANCES LIMITED | Private company limited by shares | Dissolved |
| MERCURY INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| Mercury Group International Limited | Private company limited by shares | Live |
| Mercury Group International Limited | Private company limited by shares | Live |
| MERCURY INTERNATIONAL FINANCE AND INVESTMENTS GROUP LIMITED | Private company limited by shares | Dissolved |
| HERMES MERCURY INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| MERCURY INTERNATIONAL HOLDINGS CO. LIMITED | Private company limited by shares | Live |
| HONG KONG MERCURY INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| MERCURY INTERNATIONAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| MERCURY TECHNOLOGY (HONG KONG) INTERNATIONAL LIMITED | Private company limited by shares | Live |
| MARS AND MERCURY (INTERNATIONAL) LIMITED | Private company limited by shares | Dissolved |
| MERRY MERCURY INTERNATIONAL CO LIMITED | Private company limited by shares | Live |
| MERCURY INTERNATIONAL SERVICES LIMITED | Private company limited by shares | Dissolved |
| MERCURY INTERNATIONAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| MERCURY INTERNATIONAL TRADE LIMITED | Private company limited by shares | Live |
| MERCURY INTERNATIONAL TRADING COMPANY LIMITED | Private company limited by shares | Live |
| MERCURY TRADING INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| MERCURY INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| MERCURY INVESTMENT LIMITED | Private company limited by shares | Live |
| Mercury DC Investment Limited | Private company limited by shares | Live |
| MERCURY (ASIA) INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| Mercury Investment Holding Limited | Private company limited by shares | Live |
| MERCURY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| MERCURY INVESTMENTS LIMITED | Private company limited by shares | Live |
| New Mercury Investments Limited | | Live |
| MERCURY INVESTORS LIMITED | Private company limited by shares | Live |
| Mercury Jewellery Co. Limited | Private company limited by shares | Live |
| Jiuding Mercury Limited | Private company limited by shares | Live |
| Mercury Journey Company Limited | Private company limited by shares | Live |
| MERCURY KINGDOM (HONG KONG) LIMITED | Private company limited by shares | Live |
| MERCURY LINE COMPANY LIMITED | Private company limited by shares | Live |
| MERCURY LOGISTICS LIMITED | Private company limited by shares | Live |
| Mercury Dragon Logistics Limited | Private company limited by shares | Live |
| Mercury Global Logistics Services Limited | Private company limited by shares | Live |
| MERCURY TRADE LOGISTICS LIMITED | | Live |
| Mercury Management Limited | Private company limited by shares | Live |
| MERCURY MANAGEMENT LIMITED | | Live |
| MERCURY ASSETS MANAGEMENT LIMITED | Private company limited by shares | Live |
| MERCURY CAPITAL MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| Mercury Catering Management Limited | Private company limited by shares | Live |
| Mercury Global Supply Chain Management Limited | Private company limited by shares | Live |
| HONG KONG MERCURY HOTEL MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| Mercury Management Service Limited | Private company limited by shares | Live |
| Mercury Sports Management Limited | Private company limited by shares | Live |
| MERCURY MANAGEMENT & TRADING LIMITED | Private company limited by shares | Dissolved |
| Mercury Management & Trading Limited | Private company limited by shares | Live |
| MERCURY MANAGER COMPANY LIMITED | Private company limited by shares | Live |
| TREASURE WEALTH MERCURY MANAGER COMPANY LIMITED | Private company limited by shares | Dissolved |
| MERCURY ELECTRICAL MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Mercury Mariner Limited | Private company limited by shares | Live |
| OCEAN MERCURY MARITIME COMPANY, LIMITED | Private company limited by shares | Dissolved |
| Mercury Digital Marketing Communications Company Limited | Private company limited by shares | Live |
| MERCURY MEDIA LIMITED | Private company limited by shares | Dissolved |
| APOLLO MEDICAL MERCURY LIMITED | Private company limited by shares | Dissolved |
| Mercury Medical Devices Limited | Private company limited by shares | Live |
| MERCURY MIND APPLIANCES LIMITED | Private company limited by shares | Dissolved |
| MERCURY MODELS LIMITED | Private company limited by shares | Dissolved |
| MERCURY DANCING MOVIE LIMITED | Private company limited by shares | Live |
| Mercury 8 Network System Limited | Private company limited by shares | Dissolved |
| MERCURY BY NICE LIMITED | | Live |
| MERCURY NOMINEES LIMITED | Private company limited by shares | Dissolved |