| KOIN COMMODITY CO., LIMITED | Private company limited by shares | Live |
| KOINBASE LIMITED | | Live |
| KOINEN INDUSTRY LIMITED | Private company limited by shares | Live |
| Koiner's, Limited | Private company limited by shares | Live |
| Koinnect Limited | | Live |
| KOINONIA LIMITED | Company limited by guarantee | Live |
| Cafe Koinonia Limited | Private company limited by shares | Live |
| KOINONIA CHRISTIAN CHURCH LIMITED | Company limited by guarantee | Dissolved |
| KOINONIA CHRISTIAN CHURCH LIMITED | Company limited by guarantee | Live |
| KOINONIA MUSIC COMPANY LIMITED | Company limited by guarantee | Live |
| KOINONIA TRAVEL LIMITED | Private company limited by shares | Live |
| KoinPlus Limited | Private company limited by shares | Live |
| KOINU HOUSE PROFESSIONAL PETS GROOMING CENTRE LIMITED | Private company limited by shares | Live |