| SAN YOU DIET LIMITED | Private company limited by shares | Dissolved |
| DIET LAB CO. LIMITED -THE- | Private company limited by shares | Live |
| SLT DIET LIMITED | Private company limited by shares | Live |
| Po Hei Diet Limited | | Live |
| JST MEDICINAL DIET CULTURE (CHINA) PROMOTION ASSOCIATION LIMITED | Private company limited by shares | Live |
| Happy Diet Limited | | Live |
| MING TIM DIET COMPANY LIMITED | Private company limited by shares | Live |
| Mon2friday Diet Limited | Private company limited by shares | Live |
| Iman Dietary Limited | Private company limited by shares | Live |
| WINSURE DIETARY LIMITED | Private company limited by shares | Dissolved |
| DIETERBAKICENTERPRISES ASIA LIMITED | Private company limited by shares | Dissolved |
| Australia Dieterkuckelkorn Group Co., Limited | Private company limited by shares | Live |
| HONG KONG MINGXUAN DIETETIC CO. LIMITED | Private company limited by shares | Live |
| DIETETIQUE A DOMICILE LIMITED | Private company limited by shares | Live |
| DIETHELM & COMPANY LIMITED | Private company limited by shares | Dissolved |
| PEC Dietitian HK Limited | Private company limited by shares | Live |
| Mint Dietitian Limited | | Live |
| SPORTS DIETITIAN LIMITED | Private company limited by shares | Live |
| Hong Kong Academy of Accredited Dietitians Limited | Company limited by guarantee | Live |
| DIETITIAN'S CHOICE COMPANY LIMITED | Private company limited by shares | Live |
| EVIDENCE-BASED DIETITIANS OF ASIAN PACIFIC CO., LIMITED | Private company limited by shares | Live |
| HONG KONG DIETITIANS ASSOCIATION LIMITED | Company limited by guarantee | Live |
| INTERNATIONAL DIETITIANS UNITED ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| Dietlism Company Limited | | Live |
| Dietmeyer Limited | | Live |
| DIETNEY CO., LIMITED | Private company limited by shares | Live |
| DIETRICH LIMITED | Private company limited by shares | Live |
| BAKERY DIETS' LIMITED | Private company limited by shares | Live |
| BAKERY DIETS' (FIRST BRANCH) LIMITED | Private company limited by shares | Live |
| PRESCRIPTION DIETS LIMITED | Private company limited by shares | Dissolved |
| PRESCRIPTION DIETS (SALES) LIMITED | Private company limited by shares | Dissolved |
| SAFE Diets Asia Limited | Private company limited by shares | Live |
| R. E. DIETZ COMPANY LIMITED | Private company limited by shares | Live |
| DIETZ ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| DIETZ GROUP LIMITED | Private company limited by shares | Dissolved |
| DIETZ INTERNATIONAL LIMITED | Private company limited by shares | Live |
| DIETZ TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |