| ORORA HONG KONG HOLDINGS LIMITED | Private company limited by shares | Live |
| ORORA INSPIRED INTERNATIONAL LIMITED | | Live |
| OROS LIMITED | Private company limited by shares | Dissolved |
| OROS ASIA CO., LIMITED | Private company limited by shares | Live |
| KOUSHU OROSHIDONYA LIMITED | Private company limited by shares | Live |
| OROSI LIMITED | Private company limited by shares | Live |
| Orosi HK Limited | | Live |
| OROSIAN TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| OROTON (ASIA) LIMITED | Private company limited by shares | Dissolved |
| OROTON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| OrotonGroup (Hong Kong) Limited | Private company limited by shares | Live |
| COMPLEX OROYA TRADING LIMITED | Private company limited by shares | Live |
| ORPAN FAR EAST LIMITED | Private company limited by shares | Live |
| ORPC RECREATION (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| KA SHI AND ORPHANS LIMITED | Private company limited by shares | Live |
| ANGELS FOR ORPHANS LIMITED | Company limited by guarantee | Live |
| ORPHANS LINK MISSION, ASIA LIMITED | Company limited by guarantee | Dissolved |
| ORPHEE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Orphek Limited | Private company limited by shares | Live |
| ORPHEON LIMITED | Private company limited by shares | Live |
| ORPHEUS LIMITED | Private company limited by shares | Dissolved |
| ORPHEUS COMPANY LIMITED | Private company limited by shares | Live |
| ORPHEUS DESIGN LIMITED | Private company limited by shares | Dissolved |
| Orpheus Music Centre Limited | | Live |
| Orpheus Solutions Limited | Private company limited by shares | Live |
| ORPIN LIMITED | Private company limited by shares | Dissolved |
| ORPINGTON LIMITED | Private company limited by shares | Dissolved |
| ORPONVILLE LIMITED | Private company limited by shares | Dissolved |
| ORPT Company Limited | Private company limited by shares | Live |
| ORPWOOD LIMITED | Private company limited by shares | Dissolved |
| Orquidea Commerce Company Limited | Private company limited by shares | Live |
| ORRA INSIGHT LIMITED | | Live |
| ORRAM LIMITED | Private company limited by shares | Dissolved |
| ORRELL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ORRERY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ORRERY TRAVEL & TRADING GMBH HONGKONG LIMITED | Private company limited by shares | Live |
| ORRICK CORPORATION LIMITED | Private company limited by shares | Live |
| ORRICK GROUP LIMITED | Private company limited by shares | Live |
| ORRICK STAR INDUSTRIAL LIMITED | Private company limited by shares | Live |
| ORRICK TRADE LIMITED | | Live |
| ORRICKOR INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| ORRICO INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ORRIDGE COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORRINGTON LIMITED | Private company limited by shares | Dissolved |
| Orrion Chemicals Limited | Private company limited by shares | Live |
| ORRIS LIMITED | Private company limited by shares | Dissolved |
| ORRIS LIMITED | Private company limited by shares | Live |
| ORRISTAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| HK ORRO DIGITAL LIMITED | Private company limited by shares | Live |
| ORROCH LIMITED | Private company limited by shares | Dissolved |
| ORRONG ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ORRS LIMITED | | Live |
| O.R.S. LIMITED | Private company limited by shares | Dissolved |
| R & B OR'S JEWELLERY COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORSA COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORSAN GROUPING CO., LIMITED | Private company limited by shares | Live |
| OrSan Technologies Co., Limited | Private company limited by shares | Live |
| ORSAY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ORSBECK INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ORSELET (HK) LIMITED | Private company limited by shares | Live |
| ORSELLI CAPITAL (ASIA) LIMITED | Private company limited by shares | Dissolved |
| ORSENIGO HONG KONG LIMITED | Private company limited by shares | Dissolved |
| ORSENNA LIMITED | Private company limited by shares | Live |
| ORSER INDUSTRIAL LIMITED | Private company limited by shares | Live |
| ORSHA INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Hong Kong orshang pr media group Limited | Private company limited by shares | Live |
| Orshang Wonder Limited | Private company limited by shares | Live |
| ORSHI WATCHES CO., LIMITED | Private company limited by shares | Live |
| ORSICA COMPANY LIMITED | Private company limited by shares | Dissolved |
| Shanghai Orsin Medical Technology (Hong Kong) Company Limited | Private company limited by shares | Dissolved |
| ORSINI LIMITED | Private company limited by shares | Dissolved |
| ORSINI FAR EAST LIMITED | Private company limited by shares | Dissolved |
| Orsini Entertainment Limited | Private company limited by shares | Live |
| ORSINI INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ORSINIS LIMITED | Private company limited by shares | Dissolved |
| ORSINO COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORSO LIMITED | Private company limited by shares | Dissolved |
| Orso Asia Co., Limited | Private company limited by shares | Live |
| Global ORSO Limited | Private company limited by shares | Live |
| orso International Limited | | Live |
| ORSO INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ORSOS Island Asia Limited | Private company limited by shares | Live |
| UK ORSTER (INTERNATIONAL) PETROLEUM GROUP LIMITED | Private company limited by shares | Live |
| ORSUM LIMITED | Private company limited by shares | Live |
| OR-SUN Times Company Limited | Private company limited by shares | Live |
| NOVA ORTA LIMITED | Private company limited by shares | Dissolved |
| ORTALIS RESOURCES INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| ORTANIQUE LIMITED | Private company limited by shares | Live |
| Ortax Shipping Co. Limited | Private company limited by shares | Dissolved |
| ORTCOM LIMITED | Private company limited by shares | Live |
| Orte Limited | Private company limited by shares | Live |
| ORTE QUALITY ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| Ortec Finance Asia Limited | Private company limited by shares | Live |
| ORTEDAHON TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Ortega Limited | Private company limited by shares | Live |
| Ortega Capital Limited | Private company limited by shares | Dissolved |
| ORTEGA CONTROL (CHINA) CO., LIMITED | Private company limited by shares | Live |
| ORTEGA REALTY AND DEVELOPMENT CORPORATION (HK) LIMITED | Private company limited by shares | Dissolved |
| ORTEGA GROUP HONGKONG LIMITED | Private company limited by shares | Live |
| HONGKONG ORTEGA INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |