| Okki Limited | Private company limited by shares | Live |
| OKKITEC LIMITED | Private company limited by shares | Live |
| Okko HK Limited | Private company limited by shares | Live |
| OKKO SANITARY WARE (HK) HOLDING CO., LIMITED | Private company limited by shares | Dissolved |
| OKKO ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| OKKO INDUSTRIAL LIMITED | Private company limited by shares | Live |
| OKKO PEARL LIMITED | Private company limited by shares | Live |
| OKKO Intelligent Technology Co., Limited | Private company limited by shares | Live |
| OK-KOREA FLIGHT LIMITED | Private company limited by shares | Live |
| OKLab Limited | Private company limited by shares | Live |
| OKLAHOMA INVESTMENTS LIMITED | Private company limited by shares | Live |
| OKLAHOMANS LIMITED | Private company limited by shares | Dissolved |
| OKLEEBODY HK COMPANY LIMITED | Private company limited by shares | Live |
| HONGKONG OKLILI E-COMMERCE CO., LIMITED | Private company limited by shares | Live |
| Oklin Limited | Private company limited by shares | Live |
| Oklink Limited | | Live |
| OKlink Fintech Limited | Private company limited by shares | Live |
| OKLINK TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| OKLOGI LIMITED | Private company limited by shares | Live |
| OKLONG MANUFACTURING CO., LIMITED | Private company limited by shares | Live |
| OKLOVA LIMITED | Private company limited by shares | Live |
| OKLYCAPITAL LIMITED | Private company limited by shares | Live |
| HK OKMA BLOCK CHAIN HOLDING GROUP LIMITED | Private company limited by shares | Live |
| OKMAIACE LIMITED | | Live |
| OKMAKING CRAFTS CO., LIMITED | Private company limited by shares | Live |
| OKMETIC LIMITED | Private company limited by shares | Live |
| OKMNO ASIA LIMITED | Private company limited by shares | Live |
| OkMobiles Limited | Private company limited by shares | Live |
| OKMYALL GROUP LIMITED | Private company limited by shares | Live |
| J. VAM OKNACK LIMITED | Private company limited by shares | Dissolved |
| OKNAS COMPANY LIMITED | Private company limited by shares | Dissolved |
| OKNAS COMPANY LIMITED | Private company limited by shares | Live |
| OKNUO ELECTRONIC TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| OKOHOMA LIMITED | Private company limited by shares | Live |
| OKOK LIMITED | Private company limited by shares | Live |
| OKOKO LIMITED | Private company limited by shares | Dissolved |
| OKOLE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| OKOMART LIMITED | Private company limited by shares | Live |
| H.K OKON TRADE LIMITED | Private company limited by shares | Dissolved |
| OKONG ELECTRICAL LIMITED | Private company limited by shares | Live |
| OKONOMI LIMITED | Private company limited by shares | Live |
| Okoone Limited | Private company limited by shares | Live |
| OKOPOS-CLOUD COMPANY LIMITED | Private company limited by shares | Live |
| OKOS SERVICES LIMITED | Private company limited by shares | Live |
| Okosix Limited | | Live |
| Okosix Foundation Limited | | Live |
| OKOSU SOLUTIONS LIMITED | Private company limited by shares | Live |
| OKOTOKS COMPANY LIMITED | Private company limited by shares | Live |
| OK.Pictures Limited | Private company limited by shares | Live |
| Okportal Technology Limited | Private company limited by shares | Live |
| OKRA LIMITED | | Live |
| OKRAPEOPLE LIMITED | Private company limited by shares | Dissolved |
| O.K.S. (CHINA) LIMITED | Private company limited by shares | Dissolved |
| OKS-CAM Investments Limited | Private company limited by shares | Live |
| OKSHINE LIGHING (HK) CO., LIMITED | Private company limited by shares | Live |
| OKSIR (HK) LIMITED | Private company limited by shares | Live |
| OkSpin Co., Limited | Private company limited by shares | Live |
| Oksun International CO., Limited | Private company limited by shares | Live |
| Oktagon Limited | Private company limited by shares | Dissolved |
| Oktant Limited | Private company limited by shares | Live |
| Oktava Limited | Private company limited by shares | Live |
| OKTECH LIMITED | Private company limited by shares | Dissolved |
| OK-TEX ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| OKTOMICA ENTERTAINMENT LIMITED | Private company limited by shares | Dissolved |
| OktoPOS Solutions Asia Limited | Private company limited by shares | Live |
| 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 |