| CAR DOCTOR LIMITED -THE- | Private company limited by shares | Dissolved |
| PC DOCTOR LIMITED | Private company limited by shares | Dissolved |
| DOCTOR PET LIMITED | Company limited by guarantee | Live |
| CAR DOCTOR LIMITED | Private company limited by shares | Dissolved |
| DOCTOR BB LIMITED | Company limited by guarantee | Live |
| DOCTOR WAN SIU LUN COMPANY LIMITED | Private company limited by shares | Live |
| GO C DOCTOR CO. LIMITED | Private company limited by shares | Live |
| Doctor Now Limited | Private company limited by shares | Live |
| Doctor Im HK LIMITED | Private company limited by shares | Live |
| EV DOCTOR LIMITED | | Live |
| DOCTOR MA LIMITED | | Live |
| CARPET DOCTOR COMPANY LIMITED | Private company limited by shares | Dissolved |
| Guizhou Doctor Country Revitalization Promotion Association Limited | Private company limited by shares | Live |
| AMERICA DENTAL DOCTOR MOUTH NURSE THING LIMITED | Private company limited by shares | Live Commenced dormancy on 05-Jul-2007 |
| Doctor Dream (Dr.&Dr.) Education Technology Investment Limited | Private company limited by shares | Dissolved |
| lady herb doctor wong yu sang Healthcare Limited | Private company limited by shares | Live |
| CHINA DOCTOR MEDICAL ANCESTRAL INDUSTRY ASSOCIATION HOLDINGS LIMITED | Private company limited by shares | Live |
| NATURE DOCTOR LIMITED -THE- | Private company limited by shares | Dissolved |
| Bond Doctor Technology Limited | Private company limited by shares | Live |
| WATERPROOF DOCTOR CO. LIMITED | Private company limited by shares | Live |
| Doctoral Alliance Limited | Private company limited by shares | Live |
| Global Alliance of Academicians and Experts for Doctoral Studies Limited | | Live |
| BSU Doctoral Club (Hong Kong), Bulacan State University Alumni Association Limited | Company limited by guarantee | Dissolved |
| Sino-foreign Master And Doctoral Degree Research Institute Limited | | Live |
| Doctoral Elite Association Limited | Private company limited by shares | Live |
| DOCTORATE OF OUTSTANDING CHINESE ASSOCIATION LIMITED -THE- | Private company limited by shares | Dissolved |
| DOCTORATE CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| DOCTORATE BUSINESS CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| DOCTORATE UNIVERSAL CONSULTANCY LIMITED | Private company limited by shares | Live |
| GD-HK Innotech Doctorates Group Limited | Private company limited by shares | Live |
| DOCTORATES NETWORK LIMITED | Private company limited by shares | Dissolved |
| Doctorbot Limited | Private company limited by shares | Live |
| Doctorears Limited | | Live |
| DOCTORHUB LIMITED | Private company limited by shares | Dissolved |
| DOCTORHUNTING.COM LIMITED | Private company limited by shares | Live |
| HONGKONG DOCTORIAL HAT EDUCATION LIMITED | Private company limited by shares | Live |
| DoctorJor.com Limited | Private company limited by shares | Live |
| doctorod Limited | Private company limited by shares | Live |
| DOCTORS ACT LIMITED | Company limited by guarantee | Dissolved |
| PET DOCTORS LIMITED | Private company limited by shares | Live |
| SHENZHEN LED DOCTORS CO., LIMITED | Private company limited by shares | Live |
| DOCTORSDIRECT LIMITED | Private company limited by shares | Live |