| Company Name | Type | Status |
|---|---|---|
| YAMAGA LIMITED | Private company limited by shares | Live |
| YAMAGATA LIMITED | Private company limited by shares | Dissolved |
| YAMAGATA INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| YAMAGATA (Hong Kong) Co., Limited | Private company limited by shares | Live |
| HONGKONG YAMAGAWA CO., LIMITED | Private company limited by shares | Dissolved |
| YAMAGAWA PROMOTION LIMITED | Private company limited by shares | Dissolved |
| YAMAGAWA SPORTS LIMITED | Private company limited by shares | Live |