| HORNE & ASSOCIATES LIMITED | Private company limited by shares | Live |
| COLVIN & HORNE LIMITED | Private company limited by shares | Live |
| RAINE & HORNE PROJECTS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| COLVIN & HORNE ASSETS MANAGEMENT LIMITED | Private company limited by shares | Live |
| N.C. HORNE AND COMPANY, LIMITED | Private company limited by shares | Dissolved |
| HORNE WOOD (INT'L) CO., LIMITED | Private company limited by shares | Dissolved |
| HORNEASE LIMITED | Private company limited by shares | Dissolved |
| Horned Limited | | Live |
| HKU HORNELL HALL ALUMNI ASSOCIATION LIMITED | Company limited by guarantee | Dissolved |
| HORNELL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HORNEMAN CHEMPLAS (FAR EAST) LIMITED | Private company limited by shares | Live |
| HORNEMAN RESOURCES LIMITED | Private company limited by shares | Dissolved |
| HORNER APG ASIA LIMITED | Private company limited by shares | Live |
| HORNER FLOORING (CHINA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| HORNER ELECTRONIC CO., LIMITED | Private company limited by shares | Dissolved |
| Colin Horner Global Limited | | Live |
| Horner International Limited | Private company limited by shares | Live |
| Horner and Roberts Limited | Private company limited by shares | Live |
| HORNET COMPANY LIMITED | Private company limited by shares | Dissolved |
| Hornet Company Limited | Private company limited by shares | Dissolved |
| HORNET HK LIMITED | Private company limited by shares | Live |
| Hornet Limited | Private company limited by shares | Live |
| HORNET ENTERPRISE LIMITED | Private company limited by shares | Live |