| One.K Limited | Private company limited by shares | Live |
| ONEKAI TRADING COMPANY LIMITED | Private company limited by shares | Live |
| JAPAN ONEKAOONE INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Live |
| ONEKEN INDUSTRY LIMITED | Private company limited by shares | Live |
| Onekey Limited | Private company limited by shares | Live |
| ONEKEY LIMITED | | Live |
| ONEKEY.NET COMPANY LIMITED | Private company limited by shares | Dissolved |
| Onekg HK Company Limited | Private company limited by shares | Live |
| Oneklix Technologies Limited | Private company limited by shares | Live |