| Onicorn Technology Co., Limited | Private company limited by shares | Live |
| Onid Technology International Limited | Private company limited by shares | Live |
| Onida Import and Export Co., Limited | Private company limited by shares | Live |
| ONIDA INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| ONIDI TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| ONIE COMPANY LIMITED | | Live |
| oniix Limited | Private company limited by shares | Live |
| Onike Industry Co., Limited | Private company limited by shares | Live |
| ONIKORE INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| ONIK-TRADE LIMITED | Private company limited by shares | Dissolved |
| ITALY ONIL CHEMICAL LIMITED | Private company limited by shares | Live |
| ONIMAL INSTINCTS LIMITED | Private company limited by shares | Live |
| ONIMENY LIMITED | Private company limited by shares | Dissolved |
| ONIMEX (CHINA) LIMITED | Private company limited by shares | Dissolved |
| ON-IN ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| ON&IN PHARMACY LIMITED | | Live |
| ONIN PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| ONING LIGHTING CO., LIMITED | Private company limited by shares | Live |
| ONING DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| HONGKONG ONING INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Live |
| ONING INTERNATIONAL INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| ONION LIMITED | Private company limited by shares | Dissolved |
| ONE ONION LIMITED | | Live |
| Onion Creative Limited | Private company limited by shares | Live |
| ONION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ONIONBOY LIMITED | Private company limited by shares | Live Commenced dormancy on 11-Apr-2012 |
| OnionHead Solutions Limited | Private company limited by shares | Live |
| Onion(Hong Kong) Technology Co., Limited | | Live |
| Onionpro Limited | Private company limited by shares | Live |
| ONIONTHINGS LIMITED | Private company limited by shares | Live |
| ONIPERT COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONIRIQUE LIMITED | Private company limited by shares | Live |
| ONISEI Group Limited | | Live |
| ONISHI COMPANY LIMITED | Private company limited by shares | Dissolved |
| Onisio licensing Limited | Private company limited by shares | Live |
| ONISO CO., LIMITED | Private company limited by shares | Live |
| Onis-Trading International Company Limited | Private company limited by shares | Live |
| ONIT LIGHTING (HK) INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| ONIT INTERNATIONAL LIGHTING (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| HK ONIT LOGISTICS CO., LIMITED | Private company limited by shares | Live |
| ONITA LIMITED | Private company limited by shares | Dissolved |
| Onita Telecom Co., Limited | Private company limited by shares | Live |
| Onitell Limited | Private company limited by shares | Live |
| Oniton (China) Technology Co., Limited | Private company limited by shares | Live |
| ONITSUKA LIMITED | Private company limited by shares | Live |
| ONITSUKA JENSON MOTOR ACCESSORIES LIMITED | Private company limited by shares | Dissolved |
| ONITSUKA JENSON HOLDINGS LIMITED | Private company limited by shares | Live |
| Onity Indonesia Limited | Private company limited by shares | Live |
| ONIU INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| ONIVAL LIMITED | Private company limited by shares | Dissolved |
| O-NIVO CONSTRUCTION PTY LIMITED | Private company limited by shares | Dissolved |
| Onivox Innovation Limited | | Live |
| ONIX DNA LIMITED | Private company limited by shares | Live |
| ONIX TRADE LIMITED | Private company limited by shares | Live |
| ONIZAY LIMITED | Private company limited by shares | Live |
| ONIZUKA ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| International Onizuka Electronics Limited | Private company limited by shares | Live |
| ONJADE LIMITED | Private company limited by shares | Dissolved |
| ONJADE LIMITED | Private company limited by shares | Dissolved |
| onJe ENTERPRISE (HK) COMPANY LIMITED | Private company limited by shares | Live |
| ONJET LIMITED | Private company limited by shares | Dissolved |
| ONJET INVESTMENTS LIMITED | Private company limited by shares | Live |
| ONJETFUL LIMITED | Private company limited by shares | Dissolved |
| ONJIE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Onjin Trading Limited | | Live |
| Onjoin Trading Co. Limited | Private company limited by shares | Live |
| ON-JOY LIMITED | Private company limited by shares | Dissolved |
| ONJU COMPANY LIMITED | | Live |
| O.N.K. Mining & Construction (HK) Co. Limited | Private company limited by shares | Live |
| O.N.K TRADING LIMITED | Private company limited by shares | Live |
| Onka Trading Limited | | Live |
| ONKAAR LIMITED | | Live |
| ONKAI ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ONKAI INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ONKAI INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ONKAK LIMITED | Private company limited by shares | Dissolved |
| ONKAMCHUEN COMPANY LIMITED | Private company limited by shares | Live |
| ONKAR GLOBAL TRADING COMPANY LIMITED | | Live |
| ONKAY CO. LIMITED | Private company limited by shares | Dissolved |
| ONKAY MOULDING LIMITED | Private company limited by shares | Dissolved |
| ONKEE MOTOR LIMITED | Private company limited by shares | Live |
| ONKEE (NZ) COMPANY LIMITED | Private company limited by shares | Dissolved |
| Shenzhen Onkee Technology Limited | Private company limited by shares | Live |
| ONKEEN LIMITED | Private company limited by shares | Dissolved |
| ONKEEN ENTERPRISE LIMITED | Private company limited by shares | Live |
| Onken Advanced Materials (Hong Kong) Company Limited | | Live |
| ONKENT LIMITED | Private company limited by shares | Dissolved |
| ONKEST PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| HK ONKHUN TRADE LIMITED | Private company limited by shares | Live |
| ONKI ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ONKI LIFESTYLE LIMITED | Private company limited by shares | Live |
| ONKI RESOURCES LIMITED | Private company limited by shares | Dissolved |
| ONKI SHIPPING LIMITED | Private company limited by shares | Dissolved |
| ONKI TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ONKI TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| ONKIND ENTERPRISES LIMITED | Private company limited by shares | Live |
| ONKING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONKING SHOES & APPAREL LIMITED | Private company limited by shares | Live |
| ON-KING HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| ONKINNS INVESTMENT LIMITED | Private company limited by shares | Dissolved |