| OKUBUNO LIMITED | Private company limited by shares | Dissolved |
| OKUDAIRA COMPANY LIMITED | Private company limited by shares | Dissolved |
| OKUGAWA TRADING COMPANY LIMITED | Private company limited by shares | Live |
| OKUI TRADING LIMITED | | Live |
| OKULAN LIMITED | Private company limited by shares | Live |
| OKUME LIMITED | Private company limited by shares | Dissolved |
| Okumoto Innovations Group Limited | | Live |
| OKUMURA (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| HK OKUNG CO., LIMITED | Private company limited by shares | Live |
| Okuni Limited | Private company limited by shares | Live |
| OKUNY LIMITED | Private company limited by shares | Live |
| Okura FNB Limited | Private company limited by shares | Dissolved |
| OKURA ADAPTAGEN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| OKURA CORPORATION LIMITED | Private company limited by shares | Live |
| OKURA INTERNATIONAL FINANCE LIMITED | Private company limited by shares | Dissolved |
| Okura Global Works Limited | | Live |
| OKURA & CO. (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| OKURA (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG OKURA SHOKAI LIMITED | Private company limited by shares | Dissolved |
| OKURA INTERNATIONAL LIMITED | Private company limited by shares | Live |
| OKURA INVESTMENT LIMITED | Private company limited by shares | Live |
| OKURA INVESTMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| OKURA PULP & PAPER (HK) LIMITED | Private company limited by shares | Live |
| OKURA TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| OKURA TIMBER COMPANY LIMITED | Private company limited by shares | Dissolved |
| OKURA TRADING COMPANY LIMITED | Private company limited by shares | Live |
| OKU'S LIMITED | Private company limited by shares | Dissolved |
| Oku's Workshop Limited | Private company limited by shares | Live |
| OKUSAMA LIMITED | Private company limited by shares | Live |
| SUPER OKUSAN LIMITED | Private company limited by shares | Live |
| OKUSAY LIMITED | Private company limited by shares | Live |
| OKUSHII TRADING COMPANY LIMITED | Private company limited by shares | Live |
| OKUTA.COM LIMITED | Private company limited by shares | Dissolved |
| Okuyou Property Agency Company Limited | Private company limited by shares | Dissolved |
| OKUZEN LIMITED | Private company limited by shares | Live |