| OCEANO LIMITED | Private company limited by shares | Dissolved |
| TRE OCEANO LIMITED | Private company limited by shares | Live |
| Oceano Company Limited | Private company limited by shares | Live |
| Oceano S.A Limited | Private company limited by shares | Live |
| OCEANO LIMITED | | Live |
| COMPANHIA ELECTRIC OCEANO ( HK ) LIMITED | Private company limited by shares | Live |
| COMPANHIA INDUSTRIAL OCEANO ( HK) LIMITED | Private company limited by shares | Dissolved |
| OCEANOGRAPHER LIMITED | Private company limited by shares | Dissolved |
| OCEANOLOGY HONGKONG LIMITED | Private company limited by shares | Live |
| Ocean&Oscar Limited | Private company limited by shares | Live |
| Oceanous Limited | Private company limited by shares | Live |
| OCEANOWAYS MARITIME LIMITED | Private company limited by shares | Live |