| O.T.H. Limited | Private company limited by shares | Dissolved |
| OTHAM INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Othaniel International Holding Limited | Private company limited by shares | Live |
| Othaniel International Holding Limited | Private company limited by shares | Live |
| OTHE Workshop Limited | Private company limited by shares | Live |
| OTHEDO LIMITED | Private company limited by shares | Dissolved |
| OTHELLO LIMITED | Private company limited by shares | Dissolved |
| OTHER ONE LIMITED | Private company limited by shares | Dissolved |
| OTHER CHART CO., LIMITED | | Live |
| OTHER ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OTHER EVENT COMPANY LIMITED -THE- | Private company limited by shares | Live |
| OTHER INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Other Leaf Limited -The- | Private company limited by shares | Live |
| Other Projects Limited | Private company limited by shares | Live |
| THE OTHER SIDE HK LIMITED | | Live |
| Other Way Sports Limited | Private company limited by shares | Live |
| Think Other Company Limited | Private company limited by shares | Live |
| IN OTHER WORDS LIMITED | Private company limited by shares | Live |
| Otherhalf Limited | | Live |
| DESIGN OTHERING COMPANY LIMITED | Private company limited by shares | Live |
| OtherKomster Limited | Private company limited by shares | Live |
| OtherLand Limited | Private company limited by shares | Live |
| OTHER-WAY ENTERPRISES LIMITED | Private company limited by shares | Live |
| Otherwhere Studio Limited | Private company limited by shares | Live |
| OTHERWISE COMPANY LIMITED | | Live |
| OtherWorld Limited | Private company limited by shares | Live |
| OTHM Global Limited | | Live |
| OTHNIEL LIMITED | Private company limited by shares | Dissolved |
| OTHNIEL INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| Othos Virtual Solutions Limited | Private company limited by shares | Live |
| U.S.A OTHSUN GROUP (HONGKONG) LIMITED | Private company limited by shares | Live |
| OTHUA LIMITED | Private company limited by shares | Live |