| OCTAN ENERGY LIMITED | Private company limited by shares | Live |
| OCTANE LIMITED | Private company limited by shares | Live |
| 168 Octane Limited | Private company limited by shares | Live |
| US Octane Fitness Limited | Private company limited by shares | Live |
| OCTANEGAMES (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| OCTANIUS (HK) LIMITED | Private company limited by shares | Live |
| OCTANS LIMITED | Private company limited by shares | Live |
| OCTANS CORPORATION HONG KONG LIMITED | Private company limited by shares | Live |
| Octans Dorne Limited | | Live |
| OCTANS INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| OCTANS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| OCTANS INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Octant Limited | Private company limited by shares | Live |