| Occidental Plastics (HK) Limited | Private company limited by shares | Live |
| Hong Kong Occidental Cosmetics Co., Limited | Private company limited by shares | Live |
| OCCIDENTAL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| OCCIDENTAL INVESTMENTS LIMITED | Private company limited by shares | Live |
| OCCIDENTAL OCEAN LIMITED | Private company limited by shares | Live |
| OCCIDENTAL AND ORIENTAL LIMITED | Private company limited by shares | Dissolved |
| Oriental & Occidental Limited | Private company limited by shares | Live |
| Occidental and Oriental Company Limited | | Live |
| OCCIDENTAL PEARL LIMITED | Private company limited by shares | Dissolved |
| OCCIDENTAL FINANCIAL SERVICES LIMITED | Private company limited by shares | Dissolved |
| OCCIDENTAL SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| OCCIDENTAL POWER TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| OCCIDENTAL TRADING CO. LIMITED | Private company limited by shares | Dissolved |
| OCCIDENTAL TRAVEL LIMITED | Private company limited by shares | Dissolved |
| OCCIDENTIAL TRADING LIMITED | Private company limited by shares | Dissolved |
| OCCITASIA LIMITED | Private company limited by shares | Live |
| OCCM Trading Company Limited | Private company limited by shares | Live |
| OCCO LIMITED | Private company limited by shares | Dissolved |
| OCCO ELECTRONICS HK CO., LIMITED | Private company limited by shares | Dissolved |
| HONGKONG OCCO (INTERNATIONAL) CO., LIMITED | Private company limited by shares | Dissolved |
| OCCO INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| OCCO MARKETING LIMITED | Private company limited by shares | Live |
| OCCO TELENET HK LIMITED | Private company limited by shares | Live |
| OCCOLIFE (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| OCCPL HK LIMITED | Private company limited by shares | Live |
| OCCREN INDUSTRIAL CO., LIMITED | Private company limited by shares | Dissolved |
| OCCREN ENERGY INDUSTRIAL LIMITED | Private company limited by shares | Live |
| OCCS LIMITED | Private company limited by shares | Live |
| OCCS SOFTWARE FACTORY LIMITED | Private company limited by shares | Dissolved |
| OCCUAD LIMITED | Private company limited by shares | Live |
| ASIA OCCULT ASSOCIATION COMPANY LIMITED | Private company limited by shares | Live |
| Occult Curve Co., Limited | Private company limited by shares | Live |
| Occult Dragon Investment Co., Limited | Private company limited by shares | Live |
| HONG KONG SOCIETY OF OCCULT RESEARCH LIMITED -THE- | Company limited by guarantee | Dissolved |
| FIRST WORK-STUDY OCCUPATION EDUCATION GROUP LIMITED | Private company limited by shares | Live |
| JIANGXI QUANCHENG OCCUPATION TRAINING CO., LIMITED | Private company limited by shares | Dissolved |
| OCCUPATIONAL TRAUMATIC THERAPEUTISTS ASSOCIATION LIMITED | Company limited by guarantee | Dissolved |
| Fortune Jet & Occupational Training Co. Limited | Private company limited by shares | Live |
| NEO OCCUPATIONAL AND HEALTH COMPANY LIMITED | Private company limited by shares | Live |
| OCCUPATIONAL PROTECTOR LIMITED | Private company limited by shares | Live |
| M.S. Occupational Therapy Limited | | Live |
| KC Occupational Therapy and Product Company Limited | Private company limited by shares | Live |
| Corporate Occupier Solutions (Asia) Limited | Private company limited by shares | Dissolved |
| ZHEJIANG OCCUPY TRADING LIMITED | Private company limited by shares | Live |
| Occurro Limited | Private company limited by shares | Live |
| OCEA INCUBATION COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG EVER OCEAM INDUSTRIAL LIMITED | Private company limited by shares | Live |
| YING HAI GROUP OCEAM LIMITED | Private company limited by shares | Live |
| FAR OCEAN COMPANY, LIMITED | Private company limited by shares | Dissolved |
| WIN OCEAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| BIG OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN FUR COMPANY LIMITED | Private company limited by shares | Live |
| ART OCEAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAX OCEAN LIMITED | Private company limited by shares | Dissolved |
| KAI OCEAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOP OCEAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUN OCEAN LIMITED | Private company limited by shares | Live |
| EL EL OCEAN LIMITED | Private company limited by shares | Dissolved |
| JET OCEAN LIMITED | Private company limited by shares | Dissolved |
| MAY OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN SUM LIMITED | Private company limited by shares | Dissolved |
| HAN OCEAN LIMITED | Private company limited by shares | Dissolved |
| FAX OCEAN LIMITED | Private company limited by shares | Live Commenced dormancy on 25-Jan-2005 |
| OCEAN BAR LIMITED | Private company limited by shares | Live |
| OCEAN MAN LIMITED | Private company limited by shares | Live |
| NEW OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN WIN LIMITED | Private company limited by shares | Dissolved |
| OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN TOP LIMITED | Private company limited by shares | Dissolved |
| TAI OCEAN LIMITED | Private company limited by shares | Dissolved |
| SKY OCEAN LIMITED | Private company limited by shares | Dissolved |
| KEY OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN SKY LIMITED | Private company limited by shares | Dissolved |
| OCEAN SUN LIMITED | Private company limited by shares | Dissolved |
| OCEAN UP LIMITED | Private company limited by shares | Dissolved |
| OCEAN JOY LIMITED | Private company limited by shares | Dissolved |
| OCEAN ART LIMITED | Private company limited by shares | Live |
| OCEAN JET LIMITED | Private company limited by shares | Dissolved |
| OCEAN MAX LIMITED | Private company limited by shares | Dissolved |
| OCEAN ACE LIMITED | Private company limited by shares | Dissolved |
| OCEAN BOX LIMITED | Private company limited by shares | Dissolved |
| JOY OCEAN LIMITED | Private company limited by shares | Dissolved |
| JET OCEAN LIMITED | Private company limited by shares | Live |
| SUN OCEAN TOP LIMITED | Private company limited by shares | Dissolved |
| RED OCEAN LIMITED | Private company limited by shares | Live |
| P K OCEAN LIMITED | Private company limited by shares | Dissolved |
| MAN OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN KEY LIMITED | Private company limited by shares | Dissolved |
| ACE OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN UP LIMITED | Private company limited by shares | Dissolved |
| OCEAN WAY LIMITED | Private company limited by shares | Dissolved |
| WIN OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN ONE LIMITED | Private company limited by shares | Live |
| BIG OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN IN LIMITED | Private company limited by shares | Dissolved |
| TOP OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN ERA LIMITED | Private company limited by shares | Dissolved |
| OCEAN ACE LIMITED | Private company limited by shares | Dissolved |
| FLY OCEAN LIMITED | Private company limited by shares | Dissolved |
| OCEAN SKY LIMITED | Private company limited by shares | Dissolved |