| OPTREX HONG KONG COMPANY LIMITED | Private company limited by shares | Dissolved |
| Optrex Hong Kong Company Limited | Private company limited by shares | Dissolved |
| OPTRIS ASIA LIMITED | Private company limited by shares | Live |
| OPTRIX LIMITED | Private company limited by shares | Live |
| OPTRON H.K LIMITED | Private company limited by shares | Live |
| OPTRON TECHNOLOGY HK LIMITED | Private company limited by shares | Live |
| FOSINCE OPTRONEC (HK) LIMITED | Private company limited by shares | Dissolved |
| ADVANCED OPTRONIC DEVICES (ASIA) CO. LIMITED | Private company limited by shares | Live |
| JC OPTRONICS LIMITED | Private company limited by shares | Dissolved |
| M.K Optronics HK Limited | Private company limited by shares | Dissolved |
| T&Q OPTRONICS LIMITED | Private company limited by shares | Live Commenced dormancy on 18-Mar-2016 |
| INT Optronics Limited | Private company limited by shares | Live |
| OPTRONICS LIMITED | Private company limited by shares | Live |
| Advanced Optronics Limited | | Live |
| GLORY OPTRONICS LIMITED | Private company limited by shares | Live |
| PACIFIC GOAL OPTRONICS LIMITED | Private company limited by shares | Live |
| TAI LONG OPTRONICS LIMITED | Private company limited by shares | Live |
| MEGA POWER OPTRONICS LIMITED | Private company limited by shares | Dissolved |
| PROTECH OPTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SKYTEK OPTRONICS LIMITED | Private company limited by shares | Live |
| SOUTH HAOYU OPTRONICS LIMITED | Private company limited by shares | Live |
| JD OPTRONIX LIMITED | Private company limited by shares | Live |
| OPTSATION LIMITED | Private company limited by shares | Live |
| OPTTECH LIMITED | Private company limited by shares | Dissolved |
| OPT-TECH MANUFACTURING LIMITED | Private company limited by shares | Live |
| OPTUM LIMITED | Private company limited by shares | Dissolved |
| Optum Limited | Private company limited by shares | Live |
| OPTURN COMPANY LIMITED | Private company limited by shares | Live |
| Optus Limited | Private company limited by shares | Live |
| OPTYPHAR LIMITED | Private company limited by shares | Dissolved |
| O.P.U. LIMITED | Private company limited by shares | Dissolved |
| OPUI TRADING LIMITED | Private company limited by shares | Dissolved |
| OPUK LIMITED | Private company limited by shares | Dissolved |
| OPULA Technology Limited | | Live |
| OPULANT SUCCESS ASSETS LIMITED | Private company limited by shares | Live |
| Opulen Asset Group Limited | Private company limited by shares | Dissolved |
| OPULENCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Opulence HK Limited | Private company limited by shares | Live |
| OPULENCE LIMITED | Private company limited by shares | Live |
| NEW YORK GUARANTY OPULENCE LIMITED | Private company limited by shares | Live |
| OPULENS LIMITED | Private company limited by shares | Live |
| OPULENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| OPULENT LIMITED | Private company limited by shares | Live |
| OPULENT WAY LIMITED | Private company limited by shares | Dissolved |
| OPULENT CAPITAL LIMITED | Private company limited by shares | Dissolved |
| Opulenta Limited | Private company limited by shares | Live |
| OPULENTUS GLOBAL INVESTMENTS LIMITED | Private company limited by shares | Live |
| GUANGZHOU OPUPEK ELECTRICAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Hongkong OPURI Technology Co., Limited | Private company limited by shares | Live |
| OPUS ONE LIMITED | Private company limited by shares | Dissolved |
| OPUS CO. LIMITED | Private company limited by shares | Live |
| Opus Dei Limited | Private company limited by shares | Live |
| OPUS AIR LIMITED | Private company limited by shares | Dissolved |
| OPUS IV LIMITED | Private company limited by shares | Live |
| Opus SB Limited | Private company limited by shares | Live |
| Opus 1 Limited | Private company limited by shares | Live |
| Opus 111 Limited | Private company limited by shares | Live |
| Opus 19 Limited | Private company limited by shares | Live |
| OPUS ART LIMITED | Private company limited by shares | Live |
| BE OPUS LIMITED | Private company limited by shares | Live |
| Opus Academy Limited | Private company limited by shares | Dissolved |
| Opus HK Advisors Limited | Private company limited by shares | Live |
| OPUS AFRICA LIMITED | Private company limited by shares | Live |
| OPUS ASIA LIMITED | Private company limited by shares | Live |
| OPUS ONE ASIA LIMITED | Private company limited by shares | Live |
| OPUS CAPITAL ASIA LIMITED | Private company limited by shares | Live |
| OPUS BELLE LIMITED | Private company limited by shares | Live |
| Opus & Best, Limited | Private company limited by shares | Live |
| BONA OPUS LIMITED | Private company limited by shares | Live Commenced dormancy on 15-Feb-2016 |
| Opus Boutique Fitness Studio Limited | Private company limited by shares | Live |
| Opus Capital Limited | Private company limited by shares | Live |
| OPUS A LA CARTE LIMITED | | Live |
| OPUS INSTRUMENT CO., LIMITED | Private company limited by shares | Live |
| OPUS COLLECTION LIMITED | Private company limited by shares | Dissolved |
| Opus Consultancy Limited | Private company limited by shares | Live |
| OPUS CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| OPUS GLOBAL CONSULTING LIMITED | Private company limited by shares | Live Commenced dormancy on 21-Jun-2016 |
| Opus Corporate Solutions Limited | Private company limited by shares | Live |
| OPUS CORPORATION LIMITED | Private company limited by shares | Dissolved |
| OPUS Creare Limited | Private company limited by shares | Live |
| Opus One Creative Limited | Private company limited by shares | Live |
| Opus Credit Limited | Private company limited by shares | Live |
| DANTTY OPUS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| OPUS DESIGN LIMITED | Private company limited by shares | Live |
| OPUS ONE DESIGN LIMITED | Private company limited by shares | Live |
| OPUS DESIGN AND BUILD LIMITED | Private company limited by shares | Live |
| OPUS EDUCATION LIMITED | Private company limited by shares | Live |
| OPUS ENGINEERING LIMITED | Private company limited by shares | Live |
| OPUS TWO ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| OPUS FASHION LIMITED | Private company limited by shares | Dissolved |
| Opus Finance Limited | Private company limited by shares | Live |
| OPUS FOREVER MUSIC LIMITED | Private company limited by shares | Live |
| OPUS FREIGHT COMPANY LIMITED | Private company limited by shares | Live |
| Opus Capital Global Limited | Private company limited by shares | Dissolved |
| GRAND OPUS LIMITED | Private company limited by shares | Live |
| Greatest Opus Limited | | Live |
| OPUS GROUP LIMITED | Private company limited by shares | Dissolved |
| OPUS GROUP HK COMPANY LIMITED | Private company limited by shares | Live |
| LABOR OPUS GROUP Limited | Private company limited by shares | Dissolved |
| OPUS VENTURE GROUP LIMITED | Private company limited by shares | Live |