| ONEX ASIA-PACIFIC INVESTMENT CO., LIMITED | Private company limited by shares | Dissolved |
| Onex Engineering Consultants Company Limited | Private company limited by shares | Live |
| Onex Corporation Limited | Private company limited by shares | Live |
| ONEX DEVELOPMENT LIMITED | Private company limited by shares | Live |
| ONEX ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| ONEX ENGINEERING COMPANY LIMITED | | Live |
| ONEX ENTERPRISE LIMITED | Private company limited by shares | Live |
| ONEX ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ONEX HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| ONEX HOLDINGS LIMITED | Private company limited by shares | Live |
| ONEX (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ONEX INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| ONEX INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ONEX INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ONEX INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ONEX TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ONEX Technology Limited | Private company limited by shares | Live |
| ONEXENO LIMITED | Private company limited by shares | Dissolved |
| ONEXIN LIMITED | Private company limited by shares | Live |
| ONEXOURCE LIMITED | Private company limited by shares | Live |
| ONExperience Group Limited | Private company limited by shares | Live |
| ONEXPRESS LIMITED | Private company limited by shares | Dissolved |
| Onexpress Limited | | Live |
| ONEXT LIMITED | Private company limited by shares | Live |
| ONEYIN LIMITED | | Live |
| ONEYON LIMITED | Private company limited by shares | Live |
| ONEYON DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Shenzhen Oneyou Technology Limited | Private company limited by shares | Live |
| OneZ Group Limited | Private company limited by shares | Live |
| OneZhop Limited | Private company limited by shares | Live |
| Onezmart Limited | Private company limited by shares | Live |
| ONEZONE ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| ONFA FURNITURE LIMITED | Private company limited by shares | Dissolved |
| ONFAIR LIMITED | Private company limited by shares | Live |
| ONFAIR DEVELOP LIMITED | Private company limited by shares | Dissolved |
| ONFAIR ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| ONFAIR ENTERPRISES LIMITED | Private company limited by shares | Live |
| ONFAIR INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ONFAIR INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ONFAIR ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| ONFAIR PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| ONFAIR TRADING LIMITED | Private company limited by shares | Dissolved |
| ONFAIR TRADING LIMITED | Private company limited by shares | Dissolved |
| ONFAITH LIMITED | Private company limited by shares | Live |
| ONFAME LIMITED | Private company limited by shares | Dissolved |
| ONFAME DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ON-FAME DEVELOPMENT LIMITED | Private company limited by shares | Live |
| ONFAME (H.K.) LIMITED | Private company limited by shares | Live |
| ONFAME INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ON-FAME INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ONFAME TRADING LIMITED | Private company limited by shares | Dissolved |
| ONFAME TRADING LIMITED | Private company limited by shares | Dissolved |
| Onfami Limited | | Live |
| ONFAMOUS LIMITED | Private company limited by shares | Dissolved |
| ONFAST & COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONFATAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ONFAX LIMITED | Private company limited by shares | Dissolved |
| ONFELLY LIMITED | Private company limited by shares | Dissolved |
| ONFEM Company Limited | Private company limited by shares | Live |
| ONFEM INVESTMENT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| ONFEM MINERAL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HongKong ONFEtech Co., Limited | | Live |
| ONFIELD COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEW ONFIELD LIMITED | Private company limited by shares | Live |
| ONFIELD ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ONFILL COMPANY LIMITED | Private company limited by shares | Live |
| ONFINE COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONFINITIVE LIMITED | Private company limited by shares | Live |
| ONFINITY LIMITED | Private company limited by shares | Dissolved |
| OnFire Group (HK) Limited | | Live |
| ONFIT ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ONFIT INVESTMENT LIMITED | Private company limited by shares | Live |
| On-Fleek Trading Limited | Private company limited by shares | Live |
| ONFLO COMPONENTS LIMITED | Private company limited by shares | Dissolved |
| ONFLO COMPUTER COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONFLO INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ONFLO MARKETING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONFLO MUSIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONFLO SOFTWARE LIMITED | Private company limited by shares | Dissolved |
| ONFLO WINES & SPIRITS LIMITED | Private company limited by shares | Live |
| ONFLOW INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ONFLOW INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ONFOO LIMITED | Private company limited by shares | Dissolved |
| ONFORCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONFORCE LIMITED | Private company limited by shares | Dissolved |
| ONFORD COMPANY LIMITED | Private company limited by shares | Live |
| ONFORD INC LIMITED | Private company limited by shares | Live |
| ONFORD ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ONFORE LIMITED | Private company limited by shares | Dissolved |
| ONFUL LIMITED | Private company limited by shares | Dissolved |
| ONFUL SURVEYORS AND ADJUSTORS LIMITED | Private company limited by shares | Dissolved |
| ONFUL INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| ONFULL COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONFULL LIMITED | Private company limited by shares | Live |
| ONFULL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ON-FUND LIMITED | Private company limited by shares | Dissolved |
| ON-FUND INVESTMENT LIMITED | Private company limited by shares | Live |
| ONFUNG INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Onfutech Supply Chain Limited | Private company limited by shares | Live |
| ONFUYAKI ENTERPRISES LIMITED | Private company limited by shares | Dissolved |