| O.C. COMPANY LIMITED | Private company limited by shares | Dissolved |
| Xiao Wang (OC) Limited | Private company limited by shares | Live |
| OC2Nutra HK Co., Limited | | Live |
| Ocablex Industrial Co., Limited | Private company limited by shares | Live |
| OCADON TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| OCAKBASI LIMITED | Private company limited by shares | Live |
| OCALA LIMITED | Private company limited by shares | Live |
| OCALA INVESTMENTS LIMITED | Private company limited by shares | Live |
| OCALI TRADING LIMITED | Private company limited by shares | Dissolved |
| OCALONE INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| OCAM TECHNOLOGY LIMITED | Private company limited by shares | Live |
| OCAMAR TECHNOLOGY LIMITED | Private company limited by shares | Live |
| OCAMBO LIMITED | Private company limited by shares | Live |
| HK OCAN STOCK LIMITED | Private company limited by shares | Dissolved |
| Ocanic Investment Trade & Commerce Limited | Private company limited by shares | Live |
| O'CANS THREE CO., LIMITED | Private company limited by shares | Dissolved |
| OCANTO LIMITED | Private company limited by shares | Dissolved |
| OCAP Limited | Private company limited by shares | Live |
| OCAPITAL LIMITED | Private company limited by shares | Live |
| OCAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| OCARD HONG KONG LIMITED | | Live |
| Ocare Limited | | Live |
| O'Care International Health Consultant Limited | Private company limited by shares | Live |
| OCARE MEDICAL CO., LIMITED | Private company limited by shares | Live |
| OCARE TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| OCARE TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| OCARINA LIMITED | Private company limited by shares | Dissolved |
| OCARINA LIMITED | Private company limited by shares | Dissolved |
| China Ocarina Academy Limited | | Live |
| Ocarinads Limited | Private company limited by shares | Live |
| OCASIA CO., LIMITED | Private company limited by shares | Live |
| OCASIA GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| OCASO LIMITED | Private company limited by shares | Live |
| Ocassions HK Limited | Private company limited by shares | Live |
| HK Ocat Limited | | Live |
| OCAZET ENTERPRISE LIMITED | Private company limited by shares | Live |
| OCCALIFE LIMITED | Private company limited by shares | Live |
| OCCASIN TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEMO OCCASIO LIMITED | Private company limited by shares | Live |
| OCCASION COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEW OCCASION LIMITED | Private company limited by shares | Live |
| TOP OCCASION LIMITED | Private company limited by shares | Live |
| OCCASION LIMITED | Private company limited by shares | Live |
| Occasion Asia Limited | Private company limited by shares | Live |
| CHINA OCCASION LIMITED | Private company limited by shares | Dissolved |
| COMPORT OCCASION LIMITED | Private company limited by shares | Dissolved |
| OCCASION CREATIVE ENTERPRISE LIMITED | Private company limited by shares | Live |
| OCCASION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| FINE OCCASION LIMITED | Private company limited by shares | Dissolved |
| FIRST OCCASION LIMITED | Private company limited by shares | Live |
| GLORY OCCASION LIMITED | Private company limited by shares | Dissolved |
| GREAT OCCASION LIMITED | Private company limited by shares | Live |
| FRANCE OCCASION FINERY GROUP LIMITED | Private company limited by shares | Live |
| Speed Occasion Hong Kong Co., Limited | | Live |
| Hong Kong Occasion Trading Limited | | Live |
| OCCASION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| JOIN OCCASION LIMITED | Private company limited by shares | Dissolved |
| OCCASION LIGHTING MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| Occasion Renewable Resources Company Limited | Private company limited by shares | Live |
| SPECIAL OCCASION LIMITED | Private company limited by shares | Live |
| TRUE OCCASION LIMITED | Private company limited by shares | Live |
| WONDERFUL OCCASION LIMITED | Private company limited by shares | Dissolved |
| YOUR OCCASION (HK) LIMITED | Private company limited by shares | Live |
| KOREA OCCASIONAL INTERNATIONAL FASHION COMPANY LIMITED | Private company limited by shares | Live |
| ID OCCASIONS LIMITED | Private company limited by shares | Dissolved |
| OCCASIONS LIMITED | Private company limited by shares | Live |
| Two Occasions F&B Limited | Private company limited by shares | Live |
| The One Occasions Company Limited | | Live |
| Occasions Furniture Co., Limited | Private company limited by shares | Live |
| OCCASIONS MARKETING COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| OCCASIONS CORPORATE & FINANCIAL COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| KAAMMA WEDDING & OCCASIONS LIMITED | Private company limited by shares | Dissolved |
| OCCASIONS PR & MARKETING LIMITED | Private company limited by shares | Live |
| OCCASIONS . PR NETWORK LIMITED | Private company limited by shares | Dissolved |
| Occasions4U Limited | Private company limited by shares | Dissolved |
| OCCASS (HONG KONG) TRADING COMPANY LIMITED | Private company limited by shares | Live |
| GRAND OCCASSION LIMITED | Private company limited by shares | Dissolved |
| OCCEE CO., LIMITED | | Live |
| OCCF Petrochemical Limited | Private company limited by shares | Dissolved |
| Occhio HK Limited | Private company limited by shares | Live |
| Occhiobello Limited | Private company limited by shares | Live |
| ORI & OCCI LIMITED | Private company limited by shares | Live |
| OCCI LIMITED | | Live |
| TOP OCCIDENT LIMITED | Private company limited by shares | Dissolved |
| Orient Occident Atelier Limited | Private company limited by shares | Live |
| NEW OCCIDENT EDUCATION GROUP (HK) LIMITED | Private company limited by shares | Dissolved |
| OCCIDENT SYSTEMS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| OCCIDENT INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| OCCIDENT SCIENCE & TECHNOLOGY LIGHTING ELECTRONIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| OCCIDENT TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| OCCIDENTAL LIMITED | Private company limited by shares | Dissolved |
| Occidental Bay Limited | | Live |
| AUSTRALASIAN & OCCIDENTAL LIMITED | Private company limited by shares | Dissolved |
| OCCIDENTAL CHEMICAL CHINA LIMITED | Private company limited by shares | Dissolved |
| OCCIDENTAL CHEMICAL FAR EAST LIMITED | Private company limited by shares | Live |
| OCCIDENTAL PETROLEUM CO., LIMITED | Private company limited by shares | Dissolved |
| Occidental Commodities Limited | Private company limited by shares | Live |
| Occidental Development Limited | | Live |
| Oriental & Occidental Energy Consulting Limited | Private company limited by shares | Live |
| U.S. OCCIDENTAL PETROLEUM GROUP CO., LIMITED | Private company limited by shares | Dissolved |