| Onett Consulting Limited | Private company limited by shares | Live |
| HONGKONG ONE-TU HOME FURNISHINGS HOLDING LIMITED | Private company limited by shares | Dissolved |
| ONETV LIMITED | Private company limited by shares | Dissolved |
| ONETWOCOMPANY LIMITED | Private company limited by shares | Live |
| ONETWOFIVE LIMITED | Private company limited by shares | Live |
| ONE-TWO-GO AIRLINES COMPANY LIMITED | Private company limited by shares | Dissolved |
| Onetwosix Co. Limited | | Live |
| ONETWOTHREE DIGITAL LIMITED | | Live |
| ONETWOTHREE GLOBAL TRADING LIMITED | | Live |
| Onetwothree123smile Company Limited | Private company limited by shares | Live |
| HK Oneunit Technology Limited | | Live |
| OneUp Limited | Private company limited by shares | Live |
| ONEV LIMITED | Company limited by guarantee | Live |
| ONEVAN TRADE LIMITED | | Live |
| OneVenture Limited | Private company limited by shares | Live Commenced dormancy on 02-Jul-2015 |
| ONEVIEW TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| Onevine Limited | Private company limited by shares | Live |
| ONEVISION ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| OneVisionAsia Limited | Private company limited by shares | Live |
| ONEWALLET GROUP LIMITED | Private company limited by shares | Live |
| OneWater (Asia) Limited | Private company limited by shares | Live |
| ONEWATER GROUP LIMITED | | Live |
| Hong Kong Onewe Design Co., Limited | | Live |
| ONE-WELL LIMITED | Private company limited by shares | Live |
| ONEWELL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Onewiex Limited | | Live |
| Onewin Limited | Private company limited by shares | Live |
| ONEWIN DESIGN LIMITED | Private company limited by shares | Live |
| ONEWIN TECHNOLOGY LIMITED | | Live |
| Onewin Trade Limited | | Live |
| ONEWING GROUP LIMITED | | Live |
| Onewing Industrial Co., Limited | Private company limited by shares | Live |
| Onewise Technology Limited | Private company limited by shares | Live |
| ONEWON INVESTMENTS LIMITED | Private company limited by shares | Live |
| Oneword Limited | Private company limited by shares | Live |
| ONEWORD TRADE CO., LIMITED | Private company limited by shares | Live |
| ONEWORD LINK LIMITED | | Live |
| OneWorks (Hong Kong) Limited | Private company limited by shares | Dissolved |
| APS ONEWORLD HK LIMITED | Private company limited by shares | Dissolved |
| ONEWORLD ALUMINIUM LIMITED | Private company limited by shares | Live |
| Oneworld Amenity Supply Co., Limited | | Live |
| OneWorld Asia Limited | Private company limited by shares | Live |
| Oneworld Capital Limited | Private company limited by shares | Dissolved |
| HK ONEWORLD BUSINESS CONSULTIN CO., LIMITED | Private company limited by shares | Live |
| Oneworld Trade Co., Limited | Private company limited by shares | Live |
| OneWorld Commerce HK Limited | Private company limited by shares | Live |
| Oneworld Fertility Consulting Limited | | Live |
| Oneworld Education Limited | Private company limited by shares | Live |
| ONEWORLD ENTERPRISES LIMITED | Private company limited by shares | Live |
| Oneworld Food Distribution (Hong Kong) Limited | Private company limited by shares | Live |
| ONE-WORLD CHARITY FOUNDATION LIMITED | Company limited by guarantee | Live |
| Oneworld Global Co., Limited | Private company limited by shares | Live |
| Oneworld Global Solutions Limited | Private company limited by shares | Live |
| OneWorld Global Manufacturing Solutions Limited | Private company limited by shares | Live |
| ONEWORLD GROUP LIMITED | Private company limited by shares | Live |
| DREAM BUILDER (ONEWORLD GROUP) ASSOCIATION LIMITED | Private company limited by shares | Live |
| ONEWORLD WILLS (H.K.) LIMITED | Private company limited by shares | Live |
| ONEWORLD HOLDINGS LIMITED | Private company limited by shares | Live |
| OneWorld Capital Holdings Limited | Private company limited by shares | Live |
| ONEWORLD HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HONG KONG ONEWORLD PENSION INDUSTRY LIMITED | Private company limited by shares | Live |
| Oneworld Star International Holdings Limited | Private company limited by shares | Dissolved |
| OneWorld International Trading Limited | Private company limited by shares | Dissolved |
| ONEWORLD INT'L INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| OneWorld Marine Limited | Private company limited by shares | Live |
| ONEWORLD MARKETING AND TRADING LIMITED | Private company limited by shares | Live |
| ONEWORLD NEW MATERIALS LIMITED | Private company limited by shares | Live |
| Oneworld Medicine Co., Limited | Private company limited by shares | Live |
| One-World (Metals) Limited | Private company limited by shares | Live |
| OneWorld Solutions Limited | Private company limited by shares | Live |
| OneWorld Freight Solutions Limited | Private company limited by shares | Live |
| OneWorld Sustainable Investments (HK) Limited | Private company limited by shares | Live |
| ONEWORLD ELECTRONIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Oneworld Technology Solutions Limited | Private company limited by shares | Live |
| ONEWORLD TOURS HK LIMITED | Private company limited by shares | Live |
| Oneworld Education Travel (Hong Kong) Limited | | Live |
| Oneworld United Limited | Private company limited by shares | Live |
| oneworldvoip Limited | Private company limited by shares | Live |
| ONEX LIMITED | Private company limited by shares | Live |
| Onex Alliance Capital Limited | Private company limited by shares | Live |
| 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 |