| OMRON ELECTRONIC COMPONENTS (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONGKONG OMRON ELECTRIC COMPANY CO., LIMITED | Private company limited by shares | Live |
| USA OMRON MEDICINE GROUP (HK) LIMITED | Private company limited by shares | Dissolved |
| O.M.S. ORIENT CONSULTING LIMITED | Private company limited by shares | Dissolved |
| OM's Living Group Limited | | Live |
| O.M.S MANAGEMENT LIMITED | | Live |
| OMSBY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| OMSE LIMITED | Private company limited by shares | Dissolved |
| OMSI LIMITED | Private company limited by shares | Dissolved |
| OMSLUX CO., LIMITED | Private company limited by shares | Live |
| OMSSI Earth-Tech (China) Limited | Private company limited by shares | Live |
| OMTA INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| OMTC COMPANY LIMITED | Private company limited by shares | Dissolved |
| OMTEC LIMITED | Private company limited by shares | Dissolved |
| OMTEN COMPANY LIMITED | Private company limited by shares | Dissolved |
| OMTF LIMITED | Private company limited by shares | Live |
| OMTIS LIMITED | Private company limited by shares | Live |
| OMTIS BUSINESS CENTRE LIMITED | Private company limited by shares | Live Commenced dormancy on 18-Mar-2014 |
| Omtis Fine Wines Limited | Private company limited by shares | Live |
| Omtis Wine Investments Limited | Private company limited by shares | Live |
| Omtjoy Technology Company Limited | | Live |
| OMTRAD CO., LIMITED | Private company limited by shares | Live |
| OMTRO LIMITED | Private company limited by shares | Live |
| OMtronic Limited | Private company limited by shares | Dissolved |
| OMT-Veyhl Asia Limited | Private company limited by shares | Live |
| OMULA COMPANY LIMITED | Private company limited by shares | Dissolved |
| Germany Omule Precision Manufacturing Co., Limited | Private company limited by shares | Live |
| Omundo Limited | Private company limited by shares | Dissolved |
| OmuSis Company Limited | Private company limited by shares | Live |
| OMUTA LIMITED | Private company limited by shares | Dissolved |
| OMUTO WAY LIMITED | Private company limited by shares | Dissolved |
| OMVentures Inc Limited | | Live |
| OMVI LIMITED | Private company limited by shares | Live |
| OMVISION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| OMW.i. Limited | Private company limited by shares | Live |
| OMWORLD LIFESTYLES LIMITED | Private company limited by shares | Live |
| O'MY PRODUCTS ASIA LIMITED | Private company limited by shares | Live |
| OMYA CX LIMITED | Private company limited by shares | Dissolved |
| OMYANY LIMITED | Private company limited by shares | Live |
| OMYGOOD COMPANY LIMITED | Private company limited by shares | Live |
| OMYGREAT (HONG KONG) CO., LIMITED | | Live |
| OMYHERO LIMITED | Private company limited by shares | Live |
| Shenzhen Omyhoney Gift Co., Limited | Private company limited by shares | Live |
| OMYL FILM PRODUCTIONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| OMyMate Limited | Private company limited by shares | Live |
| HONG KONG OMYO TRADING LIMITED | Private company limited by shares | Live |
| Omytours Limited | Private company limited by shares | Live |
| Omyway Hong Kong Limited | Private company limited by shares | Live |
| OMYWAY INTERNATIONAL PRODUCT CO., LIMITED | Private company limited by shares | Dissolved |