| BLUE HOME REALTY GROUP (HK) LIMITED | Private company limited by shares | Live |
| BLUE SKY HEALING HOME LIMITED | Company limited by guarantee | Live |
| SKY BLUE CARE NURSING HOME LIMITED | Private company limited by shares | Dissolved |
| BLUE HOME TRADING LIMITED | Private company limited by shares | Live |
| BLUE HOME GENERAL TRADING LIMITED | Private company limited by shares | Live |
| BLUE BALL (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG BLUE BELL BEER LIMITED | Private company limited by shares | Live |
| Hong Kong The Blue Bell Company Limited | Private company limited by shares | Dissolved |
| BLUE BIRD (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| BLUE BIRD HONG KONG LIMITED | Private company limited by shares | Live |
| Hong Kong Boya Blue Angel International Limited | | Live |
| Hong Kong Blue Capital Group Company Limited | Private company limited by shares | Live |
| PROMOTION BLUE CHIP STANDARD HONG KONG LIMITED | Private company limited by shares | Live |
| Hong Kong Blue Classic Healthy Education Training Limited | Private company limited by shares | Live |
| BLUE ARROW (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Blue Brand Trading Co., Limited | Private company limited by shares | Live |
| Hong Kong Airline Blue Business Services Co., Limited | | Live |
| Hong Kong Blue Cat Children's Products Co., Limited | Private company limited by shares | Live |
| HONG KONG BLUE CRYSTAL COFFEE CO., LIMITED | | Live |
| HONG KONG BLUE OCEAN CONSULTANT CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Blue Forest Consulting Co., Limited | | Live |
| HONG KONG DEEP BLUE PUMP CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Blue Camp Electronic Technology Co., Limited | Private company limited by shares | Dissolved |
| DEEP BLUE ELECTRONIC TECHNOLOGY (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Blue Sea Blue Sky Electronic Technology Co., Limited | | Live |
| BLUE SKY CLEAN EARTH ENERGY (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Blue Sky New Energy Technology Co., Limited | | Live |
| Hong Kong Blue Sky Fancy Co., Limited | | Live |
| HONG KONG BLUE GOLD BEAUTY HALL BIOLOGICAL TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Blue Gold Group Co., Limited | Private company limited by shares | Live |
| HONG KONG GREAT BLUE TRADING CO., LIMITED | Private company limited by shares | Live |
| BLUE STAR (HONG KONG) INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| BLUE SKY ENTITY INDUSTRY TRADE (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| HONG KONG BLUE BAY INT'L MARINE PRODUCTS CO., LIMITED | Private company limited by shares | Live |
| SEA BLUE INVESTMENT (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| USA Red Blue (Hong Kong) Co., Limited | Private company limited by shares | Live |
| Dark blue International (Hong Kong) Co., Limited | Private company limited by shares | Live |
| BLUE OCEAN (HONG KONG) LAB EQUIPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Blue Flame Technology Co., Limited | | Live |
| BLUE FLOWERS (HONG KONG) FURNISHING CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Le Blue Herbal Biotechnology Co., Limited | Private company limited by shares | Live |
| Hong Kong Blue Iron Technology Co., Limited | | Live |
| HONG KONG METERS OF BLUE (INTERNATIONAL) TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Blue Ocean Hong Kong Technology Co., Limited | | Live |
| HONG KONG BLUE PEARL INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| HONG KONG BLUE GEN YU PHOTOELECTRIC TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| BLUE OCEAN OFFSHORE SERVICES (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Blue Bird Technology Co., Limited | Private company limited by shares | Live |
| Blue Tiger Technology (HONG KONG) Co., Limited | | Live |
| Hong Kong Blue Whale Cross-border Trading Co., Limited | | Live |
| Hong Kong Blue Sky International Trading Co., Limited | | Live |
| Hong Kong Blue Whale Technology Co., Limited | Private company limited by shares | Live |
| Hong Kong Blue Label Trading Co., Limited | | Live |
| Hong Kong Light Blue Trading Co., Limited | | Live |
| HONG KONG BLUE RAIN MEDIA INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Blue Mingshun Trading Co., Limited | | Live |
| Hong Kong Blue Pet Network Technology Co., Limited | | Live |
| Hong Kong blue label Network Technology Co., Limited | | Live |
| Hong Kong Blue Whale Unlimited Network Technology Co., Limited | | Live |
| Hong Kong Blue Ocean Trading Investment Co., Limited | Private company limited by shares | Live |
| Hong Kong Blue Ocean Technology Trading Co., Limited | | Live |
| HONG KONG BLUE SAIL CHEMICALS CO., LIMITED | Private company limited by shares | Live |
| HONG KONG BLUE SEAS TRADE CO., LIMITED | Private company limited by shares | Live |
| Blue Whale Shipping Service (Hong Kong) Co., Limited | | Live |
| Hong Kong Blue Shark Interactive Co., Limited | Private company limited by shares | Live |
| Hong Kong Blue Water Shipping Co., Limited | Private company limited by shares | Live |
| HONG KONG BLUE STONE INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| BLUE SUNNY ELECTRONICS (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Kirk Blue Trade Co., Limited | Private company limited by shares | Live |
| HONG KONG BLUE WAVE INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Live |
| BLUE PLANET DIVING CONSULTANT (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG BLUE RIBBON CONSULTING SERVICES COMPANY LIMITED | | Live |
| Hong Kong Blue Whale Public Relations & Consulting Limited | Private company limited by shares | Live |
| BLUE CORAL MOTOR APPLIANCE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Blue Beauty Cosmetic Hong Kong Limited | | Live |
| Blue Ocean Creation Investment Hong Kong Limited | Private company limited by shares | Live |
| Blue Whale Cross Border (Hong Kong) Limited | | Live |
| HONG KONG BLUE CUBE TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Blue Cube Technology (Hong Kong) Co., Limited | | Live |
| Blue Cube (Hong Kong) Limited | Private company limited by shares | Live |
| HONG KONG BLUE RAIN DAY-CHEMICAL LIMITED | Private company limited by shares | Live |
| HONG KONG BLUE SKY DESIGNING & ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| BLUE DREAM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Blue Chip E-commerce Limited | | Live |
| BLUE MAX ELECTRIC (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG BLUE SEA ELECTRONIC LIMITED | Private company limited by shares | Live |
| HONG KONG BLUE SKY ELECTRONICS LIMITED | Private company limited by shares | Live |
| HONG KONG EMERALD BLUE COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG EMERALD BLUE COMPANY LIMITED | Private company limited by shares | Live |
| Hong Kong Blue Ocean Wave Energy Limited | Private company limited by shares | Live |
| HONG KONG BLUE SKY ENTERPRISE GROUP LIMITED | Private company limited by shares | Dissolved |
| BLUE SKY HONG KONG ENTERPRISE LIMITED | Private company limited by shares | Live |
| Blue Ocean Enterprises (Hong Kong) Limited | Private company limited by shares | Live |
| HONG KONG BLUE STAR ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Blue Whale Interactive Entertainment (Hong Kong) Limited | Private company limited by shares | Live |
| FRENCH BLUE DRAGON FASHION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| BLUE FOX FASHION (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| BLUE MARY INTERNATIONAL FASHION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Blue Whale Financial Technology Group Limited | Private company limited by shares | Live |
| BLUE TEA GAMES HONG KONG LIMITED | Private company limited by shares | Live |