| HIERARCHY COMPUTER TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HIERARCHY HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| HIERARCHY DESIGN STUDIO LIMITED | Private company limited by shares | Live |
| HIERAX COMPANY LIMITED | Private company limited by shares | Dissolved |
| HIERN INVESTMENTS LIMITED | Public company limited by shares | Dissolved |
| HIERO COMPANY LIMITED | Private company limited by shares | Live |
| HIEROPHANT LIMITED | | Live |
| HIEROPHANT.FEI TRADING LIMITED | Private company limited by shares | Live |
| Chinese Iching Hierophants Association Limited | Private company limited by shares | Live |
| HIEROPHAT CORPORATION LIMITED | Private company limited by shares | Dissolved |
| HIEROPHAT MUSIC LIMITED | Private company limited by shares | Dissolved |
| HIEROPHAT PRODUCTION LIMITED | Private company limited by shares | Dissolved |
| HIERQ ENTERPRISES LIMITED | Private company limited by shares | Live |
| HIERSTAR LIMITED | Private company limited by shares | Live |
| HIERTECH HK LIMITED | | Live |