| Jeju Cullinan Travel Services Limited | | Live |
| JeJu Bio Enterprise Limited | Private company limited by shares | Live |
| Jeju Mt. Halla Food Products Co., Limited | Private company limited by shares | Dissolved |
| Iao Kun Jeju Hotel Company Limited | Private company limited by shares | Live |
| JEJU INTERNATIONAL AUCTION CO., LIMITED | Private company limited by shares | Dissolved |
| JEJU ISLAND ENERGY CO., LIMITED | Private company limited by shares | Live |
| JEJU ISLAND HOTEL RESORT LIMITED | Private company limited by shares | Live |
| Jeju Kimchi Company Limited | Private company limited by shares | Live |
| JEJU BAY TRADE LIMITED | Private company limited by shares | Live |
| DEER VALLEY JEJU INVESTMENT LIMITED | Private company limited by shares | Live |