| HITAC LIMITED | Private company limited by shares | Live |
| Hitac Group Limited | Private company limited by shares | Live |
| Hitac Group Limited | Private company limited by shares | Live |
| HITAC TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HITAC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HITACCO ELECTRICAL MANUFACTORY COMPANY LIMITED | Private company limited by shares | Live |
| HITACHI AIR-CONDITIONING ELECTRIC (HK) INT'L LIMITED | Private company limited by shares | Dissolved |
| HITACHI AIR-CONDITIONING SYSTEMS (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| HITACHI CABLE ASIA LIMITED | Private company limited by shares | Live |
| HITACHI ELECTRIC (CHINA) HOLDING LIMITED | Private company limited by shares | Dissolved |
| China Hitachi Lubricant Limited | Private company limited by shares | Live |
| HITACHI KOKI ASIA CO., LIMITED | Private company limited by shares | Live |
| HITACHI DATA SYSTEMS LIMITED | Private company limited by shares | Live |
| HITACHI FAR EAST LIMITED | Private company limited by shares | Dissolved |
| HITACHI EAST ASIA LIMITED | Private company limited by shares | Live |
| HITACHI ELECTRIC APPLIANCES INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| HITACHI ELECTRIC SERVICE CO. (H.K.) LIMITED | Private company limited by shares | Dissolved |
| Hitachi Electronics Limited | Private company limited by shares | Live |
| HK HITACHI SOLAR ENERGY GROUP LIMITED | Private company limited by shares | Dissolved |
| HITACHI ELEVATOR ENGINEERING COMPANY (HONG KONG) LIMITED | Private company limited by shares | Live |
| HITACHI FERRITE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hitachi Maxell Global Limited | Private company limited by shares | Live |
| Hitachi Group (China) Limited | | Live |
| HITACHI SUN (HK) GROUP TECH. LIMITED | Private company limited by shares | Dissolved |
| Hitachi Health (HongKong) Limited | | Live |
| HITACHI HIGH-TECHNOLOGIES HONG KONG LIMITED | Private company limited by shares | Live |
| HITACHI LEASING (H.K.),LIMITED | Private company limited by shares | Dissolved |
| HITACHI METALS ADMET HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HITACHI (HONG KONG) LIMITED | Private company limited by shares | Live |
| HITACHI CAPITAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| Hitachi Urban Investment (Hong Kong), Limited | Private company limited by shares | Live |
| HITACHI METALS HONG KONG LIMITED | Private company limited by shares | Live |
| HITACHI INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| ASIA HITACHI LIFT HOLDING (CHIAN) LIMITED | Private company limited by shares | Live |
| Hitachi Capital Management (China) Limited | Private company limited by shares | Live |
| HITACHI AUTOMOBILE APPLIANCES SALES CO. (SOUTH-EAST) LIMITED | Private company limited by shares | Dissolved |
| HITACHI TRAVEL AGENCY (H.K.) LIMITED | Private company limited by shares | Dissolved |
| HITACHI ZOSEN COMPANY (HK) LIMITED | Private company limited by shares | Live |
| HITACHI-ELESONIC (CHINA) LIMITED | Private company limited by shares | Dissolved |
| Hitachino HK Brewery Limited | Private company limited by shares | Live |
| Hitachino HK Trading Limited | Private company limited by shares | Live |
| HI-TACTICS INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |