| KOJI LIMITED | Private company limited by shares | Dissolved |
| KOJI LIMITED | Private company limited by shares | Live |
| Koji Limited | Private company limited by shares | Live |
| KOJI ENTERPRISE LIMITED | Private company limited by shares | Live |
| MENYA KOJI COMPANY LIMITED | Private company limited by shares | Live |
| Kojima Limited | | Live |
| KOJIMA HEALTHCARE ASIA LIMITED | Private company limited by shares | Live |
| Kojima Kitchen Limited | Private company limited by shares | Live |
| KOJIMA-ALPHA LIMITED | Private company limited by shares | Dissolved |
| Kojimach Limited | | Live |
| Kojimachi Dojo Company Limited | Private company limited by shares | Live |
| KOJIN LIMITED | | Live |
| KOJIN & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| KOJIN AUTOMOBILE PARTS INDUSTRIAL CO., LIMITED | Private company limited by shares | Dissolved |
| KOJIN ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |