| KOKUSAI IMC LIMITED | Private company limited by shares | Dissolved |
| KOKUSAI AUTO PARTS (H.K.) LIMITED | Private company limited by shares | Dissolved |
| KOKUSAI CHEMICAL COMPANY LIMITED | Private company limited by shares | Live |
| KOKUSAI CHINA LIMITED | Private company limited by shares | Live |
| KOKUSAI CLUB 21 LIMITED | Private company limited by shares | Dissolved |
| KOKUSAI MEDICOM CORPORATION LIMITED | Private company limited by shares | Dissolved |
| TOMIYASU KOKUSAI CORPORATION LIMITED | Private company limited by shares | Live |
| KOKUSAI DENGYO CO., LIMITED | Private company limited by shares | Live |
| KOKUSAI KEISO (H.K.) LIMITED | Private company limited by shares | Dissolved |
| KOKUSAI SHINJU (HK) LIMITED | Private company limited by shares | Live |
| KOKUSAI SHOJI HONG KONG CO., LIMITED | Private company limited by shares | Live |
| KOKUSAI KOEKI (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| KOKUSAI ASSET MANAGEMENT (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| KOKUSAI (INTERNATIONAL) MACHINES CENTRE LIMITED | Private company limited by shares | Dissolved |
| KOKUSAI HATSUMEI KAIHATSU KYOKAI, LIMITED | Private company limited by shares | Dissolved |
| KYOSEI KOKUSAI LIMITED | | Live |
| MORNING SUN KOKUSAI LIMITED | Private company limited by shares | Dissolved |
| KOKUSAI SALES PROJECTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| KOKUSAI SECURITIES (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Associated Kokusai Services Limited | Private company limited by shares | Live |
| NIHON KOKUSAI SHOSEN (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| KOKUSAI TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |