| HIKI LIMITED | Private company limited by shares | Dissolved |
| HIKI FOOTWEAR CO. LIMITED | Private company limited by shares | Dissolved |
| HIKIAN LIMITED | Private company limited by shares | Live |
| HIKIN LIMITED | | Live |
| HIKIN TRADING COMPANY LIMITED | | Live |
| HIKING FUN LIMITED | Company limited by guarantee | Live |
| Hi-King Co. Limited | Private company limited by shares | Live |
| Hikingsun Company Limited | Private company limited by shares | Live |
| HIKING-WOORI CAPITAL CO., LIMITED | Private company limited by shares | Live |
| HIKINYF TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Hi-Kit Laundry Company Limited | Private company limited by shares | Live |