| WINNING OCEAN LIMITED | Private company limited by shares | Live |
| WISDOM OCEAN LIMITED | Private company limited by shares | Live |
| WONDER OCEAN LIMITED | Private company limited by shares | Live Commenced dormancy on 10-Dec-2015 |
| WORTHY OCEAN COMPANY LIMITED | Private company limited by shares | Live |
| Ocean28 Limited | Private company limited by shares | Live |
| Ocean3C Limited | Company limited by guarantee | Live |
| OCEAN44 LIMITED | Private company limited by shares | Live |
| OCEANA LIMITED | Private company limited by shares | Live |
| OCEANA SPA CONSULTING COMPANY LIMITED | Private company limited by shares | Live |
| Oceana Explorer Limited | | Live |
| GOLD OCEANA LIMITED | Private company limited by shares | Dissolved |
| GROSVENOR OCEANA LIMITED | Private company limited by shares | Dissolved |
| OCEANA (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Oceana International Co Limited | Private company limited by shares | Live |
| OCEANA MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| Oceana Investment Management (HK) Limited | Private company limited by shares | Live |
| OCEANA MARINE LIMITED | Private company limited by shares | Dissolved |
| HK OCEANA SAVE CO., LIMITED | | Live |
| Oceana Trading&Service (Shanghai) Limited | Private company limited by shares | Live |
| CFT Oceana Technology Limited | Private company limited by shares | Live |
| OCEANA TOURS (H.K.) LIMITED | Private company limited by shares | Dissolved |
| OCEANA BAY TRADING LIMITED | Private company limited by shares | Live |
| OCEANA TRADING GROUP LIMITED | Private company limited by shares | Live |
| OCEANA INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| WESTERN OCEANA ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OCEANA YACHTS LIMITED | Private company limited by shares | Dissolved |
| OCEANACROSS LIMITED | Private company limited by shares | Dissolved |
| OCEANADE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OCEANADX LIMITED | Private company limited by shares | Live |
| OCEANAGE LIMITED | Private company limited by shares | Dissolved |
| OCEANAIR ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OCEANALL LIMITED | Private company limited by shares | Live Commenced dormancy on 18-Jun-2004 |
| Oceanalpha group Limited | Private company limited by shares | Live |
| OCEANAME LIMITED | Private company limited by shares | Dissolved |
| Oceanavi Shipping Limited | | Live |
| OCEANBALL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| OCEANBASE CHARTERING HK LIMITED | Private company limited by shares | Live |
| OCEAN-BIZ LIMITED | Private company limited by shares | Dissolved |
| OCEANBLESS TRADE LIMITED | Private company limited by shares | Live |
| OceanBlue Finance Group Limited | Private company limited by shares | Live |
| Oceanblue HuiFu Holding Limited | Private company limited by shares | Live |
| OCEANBLUE SHIPPING COMPANY LIMITED | Private company limited by shares | Live |
| Oceanblue Cloud Technology Limited | Private company limited by shares | Live |
| Oceanblue Network Technology Limited | | Live |
| OCEANBON LIMITED | Private company limited by shares | Live |
| OCEANBOND HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| OCEANBOND INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Oceanbox Group Limited -The- | Private company limited by shares | Live |
| OCEANBOX LOGISTIC LIMITED | | Live |
| OceanBright Mechanical Int'l Group Limited | Private company limited by shares | Live |
| OCEANBURGH LIMITED | Private company limited by shares | Dissolved |
| OCEANCIEL (HONG KONG) DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| OCEANCIRCLE SHIPPING (HONGKONG) LIMITED | Private company limited by shares | Live |
| OCEANCITY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OCEANCO LIMITED | Private company limited by shares | Dissolved |
| OCEAN.COM LIMITED | Private company limited by shares | Dissolved |
| Ocean-Connect (Hong Kong) International Investment Limited | Private company limited by shares | Live |
| Oceanconnect Marine Pte Limited | Private company limited by shares | Live |
| OceanConnect Marine HK Limited | Private company limited by shares | Live |
| OCEANCORP LIMITED | Private company limited by shares | Live |
| OCEANCRETE LIMITED | Private company limited by shares | Live |
| OCEANCROSS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| OCEANCROWN TRADING LIMITED | Private company limited by shares | Dissolved |
| OCEANCYCLE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HONGKONG OCEAN-DA (INTERNATIONAL) CO., LIMITED | Private company limited by shares | Live |
| OCEANDA INVESTMENTS LIMITED | Private company limited by shares | Live |
| OCEANDALE COMPANY LIMITED | Private company limited by shares | Dissolved |
| OCEANDATA LIMITED | Private company limited by shares | Live |
| HK Oceander Limited | | Live |
| OCEANE LIMITED | | Live |
| OCEAN.E DEVELOPMENTS COMPANY LIMITED | Private company limited by shares | Live |
| Hong Kong Oceaneering Limited | Private company limited by shares | Live |
| QINGDAO PACIFIC OCEANEERING (H.K.) LIMITED | Private company limited by shares | Live |
| YUE OCEANEERING EQUIPMENT SHARE LIMITED | Private company limited by shares | Dissolved |
| OCEANERA MARKETING (INTERNATIONAL) LIMITED | Private company limited by shares | Dissolved |
| Oceanergy Industrial Co., Limited | | Live |
| OCEANET COMPANY LIMITED | Private company limited by shares | Dissolved |
| FISHMAW OCEANET COMPANY LIMITED | Private company limited by shares | Live |
| OCEANET SYSTEM LIMITED | Private company limited by shares | Live |
| OCEANET TECHNOLOGY LIMITED | Private company limited by shares | Live |
| OCEANETIC FOODS LIMITED | Private company limited by shares | Dissolved |
| Oceanevo Global Limited | | Live |
| OCEANEX LIMITED | Private company limited by shares | Dissolved |
| OCEANFAME LIMITED | Private company limited by shares | Dissolved |
| OCEANFAME ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OCEANFAR HOTEL AMENITIES CO., LIMITED | Private company limited by shares | Live |
| Oceanfare Limited | Private company limited by shares | Dissolved |
| OCEANFEEL LIMITED | Private company limited by shares | Live |
| OCEANFIELD LIMITED | Private company limited by shares | Dissolved |
| OCEANFISH LIMITED | Private company limited by shares | Live |
| OCEANFOLKS ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OCEANFORD ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| OCEANFORD (HONG KONG) ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OCEANFORD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| OCEANFORD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| OCEANFORD INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| OCEANFORT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| OCEANFORT INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| OCEANFRESH ASIA LIMITED | Private company limited by shares | Live |
| OCEANFRONT IMP & EXP CO., LIMITED | Private company limited by shares | Live |