| HK SMYC BUILDING DECORATION DESIGN ENGINEERING LIMITED | Private company limited by shares | Live |
| SMYG LIMITED | | Live |
| SMYLE LIMITED | Private company limited by shares | Live |
| SMYLES LIMITED | Private company limited by shares | Dissolved |
| SMYRNA COMPANY LIMITED | Private company limited by shares | Dissolved |
| SMYS Limited | Private company limited by shares | Live |
| SMYTEL LIMITED | | Live |
| Studio Smyth Productions Limited | Private company limited by shares | Live |
| ATHERTON SMYTHE AND TREMBATH LIMITED | Public company limited by shares | Dissolved |
| DORCHESTER & SMYTHE LIMITED | Private company limited by shares | Dissolved |
| HK SMYTHE INT'L DESIGN OFFICE LIMITED | Private company limited by shares | Live |
| SMYTHE WHEATLEY H. K. LIMITED | Private company limited by shares | Dissolved |
| SMYY LIMITED | Private company limited by shares | Live |