| HOYA TOP LIMITED | Private company limited by shares | Dissolved |
| HOYA LIMITED | Private company limited by shares | Dissolved |
| HOYA LIMITED | Private company limited by shares | Live |
| E HOYA LIMITED | | Live |
| HOYA CAPITAL LIMITED | Private company limited by shares | Live |
| HOYA (CHINA) FOUNDATION LIMITED | Private company limited by shares | Live |
| CHINA HOYA INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| HOYA INTERNATIONAL FREIGHT CO., LIMITED | Private company limited by shares | Dissolved |
| HOYA INTERNATIONAL CONSULTANT COMPANY LIMITED | Private company limited by shares | Dissolved |
| HOYA CONSULTING LIMITED | Private company limited by shares | Live |
| HOYA ESTATES LIMITED | Private company limited by shares | Dissolved |
| HOYA GLOBAL LIMITED | Private company limited by shares | Live |
| HOYA INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| HOYA MTC (H.K.) LIMITED | Private company limited by shares | Dissolved |
| HOYA INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Live |
| HOYA INDUSTRIAL (HK) CO LIMITED | Private company limited by shares | Dissolved |
| HOYA INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Hoya International Limited | | Live |
| HOYA INTERTRADE LIMITED | Private company limited by shares | Dissolved |
| HOYA INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Hoya Lighting Co., Limited | Private company limited by shares | Live |
| HOYA DATA MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| HOYA Manufacturing Co., Limited | Private company limited by shares | Dissolved |
| HOYA MEDICAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HOYA OPTICAL (ASIA) COMPANY LIMITED | Private company limited by shares | Live |
| Hoya International Optics Co., Limited | | Live |
| ORIENTAL HOYA CO., LIMITED | Private company limited by shares | Dissolved |
| HOYA SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| HOYA TECH INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| HOYA TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| HOYA TRADER INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| HK HOYA TRADING LIMITED | | Live |
| HOYA TRADING CO., LIMITED | Private company limited by shares | Live |
| Hoya HK International Trading Limited | Private company limited by shares | Live |
| Hoyabeauty Limited | | Live |
| HOYALAND COMPANY LIMITED | Private company limited by shares | Live |
| HOYAMA (H.K.) LIMITED | Private company limited by shares | Live |
| HOYAN DECORATIONS & FURNITURE COMPANY LIMITED | Private company limited by shares | Live |
| HOYANG MACHINERY CO., LIMITED | Private company limited by shares | Live |
| HOYANG ENTERPRISES COMPANY LIMITED | Private company limited by shares | Live |
| Hoyang Hong Kong Limited | Private company limited by shares | Live |
| HK HOYANG INDUSTRY LIMITED | Private company limited by shares | Live |
| HOYANG TRADE LIMITED | Private company limited by shares | Live |
| HONGKONG HOYAR TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HOYAR INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Live |
| HK HOYATEC ELECTRONICS STOCK LIMITED | Private company limited by shares | Live |
| HongKong Hoyatek Co., Limited | Private company limited by shares | Live |
| HOYATEK TRADING LIMITED | Private company limited by shares | Live |
| SHENZHEN HOYATT TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |