| Smart Orthotic Technology Limited | Private company limited by shares | Live |
| ORTHOTIX INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ORTHOWORKS LIMITED | Private company limited by shares | Live |
| Orthwell Limited | Private company limited by shares | Live |
| ORTIC LIMITED | Private company limited by shares | Dissolved |
| ORTIKGA LIMITED | Private company limited by shares | Live |
| ORTINA LIMITED | Private company limited by shares | Dissolved |
| ORTINA LIMITED | Private company limited by shares | Dissolved |
| ORTISA LIMITED | Private company limited by shares | Dissolved |
| ORTM Capital Management Limited | Private company limited by shares | Live |
| ORTO LIMITED | | Live |
| ORTO INDUSTRIES CO. LIMITED | Private company limited by shares | Live |
| ORTOFON LIMITED | Private company limited by shares | Dissolved |
| ORTOLAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORTOLUX LIMITED | Private company limited by shares | Live |
| ORTON LIMITED | Private company limited by shares | Dissolved |
| ORTON COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORTONA COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONGKONG ORT-PAN-CHINA MACHINERY INCORPORATION LIMITED | Private company limited by shares | Live |
| ORTRAK HOLDING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORTRAK TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORTRE LIMITED | Private company limited by shares | Live |
| HONGKONG ORTRONICS INDUSTRY LIMITED | Private company limited by shares | Live |
| ORTSMESSE CO., LIMITED | Private company limited by shares | Live |
| EASTERN ORTUNE LIMITED | Private company limited by shares | Dissolved |
| Solis Ortus Limited | Private company limited by shares | Live |
| ORTUS SOLUTIONS LIMITED | Private company limited by shares | Live |
| ORTUS-T CO., LIMITED | Private company limited by shares | Live |
| Oruga Investment Limited | Private company limited by shares | Live |
| ORUIYA INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| ORUM LIMITED | Private company limited by shares | Dissolved |
| FRANCE ORUMP JEWELRY LIMITED | Private company limited by shares | Live |
| Orun Design Limited | Private company limited by shares | Live |
| ORUNIVEX LIMITED | Private company limited by shares | Live |
| ORUS COMPANY LIMITED | Private company limited by shares | Dissolved |
| O.R.V. OVATTIFICIO RESINATURA VALPADANA ASIA PACIFIC HOLDING LIMITED | Private company limited by shares | Live |
| ORVANNA LIMITED | Private company limited by shares | Live |
| ORVEC ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| ORVEMA ASIA LIMITED | Private company limited by shares | Live |
| Orveon Global Hong Kong Limited | | Live |
| ORVEST LIMITED | Private company limited by shares | Dissolved |
| ORVIBO LIMITED | Private company limited by shares | Live |
| ORVICOM HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| ORVIETAN LIMITED | Private company limited by shares | Live |
| ORVIETO COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORVIETO TRADING LIMITED | Private company limited by shares | Dissolved |
| ORVILLE LIMITED | Private company limited by shares | Dissolved |
| ORVILLE LIMITED | Private company limited by shares | Live |
| ORVILLE CONSULTING LIMITED | Private company limited by shares | Live |
| ORVILLE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| RIGHT ORVILLE LIMITED | Private company limited by shares | Live |
| ORVIS LIMITED | Private company limited by shares | Live |
| OrvitoHK Limited | | Live |
| ORVIV COMPANY LIMITED | Private company limited by shares | Live |
| ORWALD LIMITED | Private company limited by shares | Dissolved |
| OrwaTech Limited | Private company limited by shares | Live |
| ORWELL LIMITED | Private company limited by shares | Dissolved |
| ORWELL LIMITED | Private company limited by shares | Dissolved |
| ORWELL LIMITED | Private company limited by shares | Dissolved |
| ORWELL COMPANY LIMITED | | Live |
| ASIA ORWESTAI COMPANY, LIMITED | Private company limited by shares | Dissolved |
| ORWIN COMPANY LIMITED | Private company limited by shares | Dissolved |
| Orwiro CPA Limited | | Live |
| Orxcel Co., Limited | | Live |
| ORYAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORYGIN LIMITED | Private company limited by shares | Live Commenced dormancy on 25-Jan-2016 |
| ORYKTO LIMITED | | Live |
| ORYNS TRADING LIMITED | Private company limited by shares | Live |
| ORYOM TRADING LIMITED | Private company limited by shares | Live |
| Oryoukawa Catering Limited | | Live |
| ORYX LIMITED | Private company limited by shares | Live |
| Oryx Capital Limited | Private company limited by shares | Live |
| ORYX TRADING CO., LIMITED | Private company limited by shares | Live |
| Oryx Concepts Limited | | Live |
| ORYX ENTERPRISES LIMITED | Private company limited by shares | Live |
| ORYX FF&E Hong Kong Limited | Private company limited by shares | Dissolved |
| Golden Oryx Hong Kong Limited | | Live |
| Oryx Group Limited | Private company limited by shares | Live |
| Oryx Petroleum Group Limited | Private company limited by shares | Live |
| ORYX (HK) LIMITED | Private company limited by shares | Dissolved |
| ORYX HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| ORYX HONG KONG LIMITED | Private company limited by shares | Live |
| ORYX INDUSTRIES (HK) LIMITED | Private company limited by shares | Live |
| ORYX INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ORYX INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ORYX INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| ORYX PRINCIPAL INVESTORS LIMITED | Private company limited by shares | Dissolved |
| DRAGON ORYX LION LIMITED | Private company limited by shares | Live |
| ORYX MANAGEMENT LIMITED | Private company limited by shares | Live |
| Oryx Management Group Limited | | Live |
| Oryx Investment Partners Limited | Private company limited by shares | Live |
| Oryx Resources Limited | Private company limited by shares | Live |
| ORYX TRADING SERVICES CO., LIMITED | Private company limited by shares | Live |
| ORYX STAR COMPANY LIMITED | Private company limited by shares | Live |
| ORYX FOR AGR SUPPLIES LIMITED | Private company limited by shares | Live |
| ORYX FOR AGR SUPPLIES LIMITED | Private company limited by shares | Live |
| ORYXENERGY LIMITED | Private company limited by shares | Dissolved |
| Oryxnet Limited | | Live |
| ORYZA CAPITAL LIMITED | Private company limited by shares | Live |
| ORZKS LIMITED | | Live |