| BYLAND CRAFT CO., LIMITED | Private company limited by shares | Live |
| BYLAND INVESTMENT LIMITED | Private company limited by shares | Live |
| Byland Investment Management Co., Limited | Private company limited by shares | Live |
| BYLAND MINMETALS CO LIMITED | Private company limited by shares | Live |
| BYLAX INVESTMENTS LIMITED | Private company limited by shares | Live |
| Bylee Co., Limited | Private company limited by shares | Live |
| BYLEE INDUSTRY LIMITED | Private company limited by shares | Dissolved |
| BYLEE KAYS LIMITED | Private company limited by shares | Dissolved |
| Byleedo Limited | | Live |
| BYLEONA LIMITED | | Live |
| BYLICAR COMPANY LIMITED | Private company limited by shares | Live |
| Bylily Electronic Technology Co., Limited | Private company limited by shares | Live |
| By-Line Technology Limited | Private company limited by shares | Live |
| BYLINKS LIMITED | Private company limited by shares | Dissolved |
| BYLLY HONGKONG LIMITED | Private company limited by shares | Live |
| BYLOY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Bylu Design Limited | Private company limited by shares | Live |
| BYMACE LIMITED | Private company limited by shares | Live |
| Bymajestic Limited | | Live |
| BYME ENGINEERING (HONG KONG) LIMITED | Private company limited by shares | Live |
| BYME (HK) Limited | Private company limited by shares | Live |
| BYMER TOY INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| Bymo Limited | Private company limited by shares | Live |
| BYMO TRADING HK LIMITED | | Live |
| BYMOON LIMITED | Private company limited by shares | Live |
| Bymoon Entertainment Limited | | Live |
| BYMOTA COMPANY LIMITED | Private company limited by shares | Dissolved |
| BYMOTION COMPANY LIMITED | Private company limited by shares | Live |
| BYNAMO LIMITED | Private company limited by shares | Live |
| BYNARIC LIMITED | Private company limited by shares | Live |
| BYNAST COMPANY LIMITED | Private company limited by shares | Dissolved |
| BYNAT TECHNOLOGY (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| By.NaturalStone Company Limited | | Live |
| YIP BYNG SEN & COMPANY LIMITED | Private company limited by shares | Dissolved |
| BYNILON GARMENT INDUSTRIAL CO., LIMITED | Private company limited by shares | Dissolved |
| BYNNERY LIMITED | Private company limited by shares | Live |
| BYNY CO. LIMITED | Private company limited by shares | Live |
| BYOB LIMITED | Private company limited by shares | Dissolved |
| BYOB Company Limited | Private company limited by shares | Live |
| Backyard by BYOB Limited | Private company limited by shares | Live |
| BYOB Coffee Limited | Private company limited by shares | Live |
| BYOB GROUP LIMITED | Private company limited by shares | Live |
| BYOBS COMPANY LIMITED | Private company limited by shares | Live |
| B.Y.O.C. COFFEE CHATEAU LIMITED | Private company limited by shares | Dissolved |
| byo.com Limited | Private company limited by shares | Dissolved |
| Byogo Limited | Private company limited by shares | Live |
| byoGuard.com HK Limited | | Live |
| CARL BYOIR ASIA LIMITED | Private company limited by shares | Dissolved |
| BYOL Limited | Private company limited by shares | Live |
| BYOND Creatives Limited | | Live |
| Byond Technology (Hong Kong) Limited | | Live |
| BYOND INT'L TRADING (HONGKONG) LIMITED | Private company limited by shares | Live |
| BYONDTEK LIMITED | Private company limited by shares | Live |
| BYONE ELECTRONICS HK CO., LIMITED | | Live |
| BYONE GROUP INTERNATIONAL HOLDINGS SHARE LIMITED | Private company limited by shares | Dissolved |
| BYONE INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| Byonia.co Limited | | Live |
| De Byoode Limited | | Live |
| BYOR (Hong Kong) Limited | Private company limited by shares | Dissolved |
| FUKKOH BYORA COMPANY LIMITED | Private company limited by shares | Live |
| BYOT Company Limited | Private company limited by shares | Live |
| B.YOU.T Zone Limited | Private company limited by shares | Live |
| BYOUTH COSMETICS CO., LIMITED | Private company limited by shares | Live |
| BYPAC COMPANY LIMITED | Private company limited by shares | Live |
| Bypaxx Education Consultancy(Hong Kong) Limited | Private company limited by shares | Live |
| BYPHARMD LIMITED | Private company limited by shares | Live |
| BYPHASSE LIMITED | Private company limited by shares | Live |
| BY-PRINTING LIMITED | Private company limited by shares | Live |
| HONG KONG DAFU AGRICULTURAL BY-PRODUCT LIMITED | Private company limited by shares | Live |
| MR.VEGETABLE FARMER AGRICULTURAL BY-PRODUCT LIMITED | Private company limited by shares | Live |
| YUE XIU ANIMAL BY-PRODUCTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| BYPY POWERTRANS PARTS LIMITED | Private company limited by shares | Live |
| BYPY TRANS POWER LIMITED | Private company limited by shares | Live |
| BYQH INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Live |
| BYRAM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| BYRC LIMITED | | Live |
| BYRD INVESTMENTS LIMITED | Private company limited by shares | Live |
| BY-REALLY INDUSTRIAL LIMITED | Private company limited by shares | Live |
| Byredo Limited | Private company limited by shares | Live |
| BYRICH COMPANY LIMITED | Private company limited by shares | Dissolved |
| BYRIGHT ENTERPRISE CO., LIMITED | | Live |
| Byrn Limited | Private company limited by shares | Live |
| BYRNE COMPUTING LIMITED | Private company limited by shares | Dissolved |
| BYRNE AND HICKMAN LIMITED | Private company limited by shares | Live |
| JACKSON BYRNE LIMITED | Private company limited by shares | Dissolved |
| JOHN BYRNE ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| Byrne Oilfield Solutions Limited | Private company limited by shares | Live |
| Qiao Byrne International Company Limited | | Live |
| Byrne International Trading Limited | Private company limited by shares | Live |
| BYRNECO LIMITED | Private company limited by shares | Live Ceased dormancy on 21-Jun-1999 |
| Byrne-Kwok Limited | Private company limited by shares | Live |
| BYRNES INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| BYROCK LIMITED | Private company limited by shares | Dissolved |
| BYROCK SOLUTIONS LIMITED | Private company limited by shares | Live |
| BYRON LIMITED | Private company limited by shares | Live |
| Byron Bay Limited | Private company limited by shares | Live |
| Byron McKenzie Limited | Private company limited by shares | Live |
| BYRON RICHFIELD LIMITED | Private company limited by shares | Live |
| BYRROS TRADE LIMITED | | Live |
| By Your Side (BYS) Employment Centre Limited | Private company limited by shares | Live |