| KOYI LIMITED | Private company limited by shares | Dissolved |
| KOYIK LIMITED | Private company limited by shares | Dissolved |
| KOYIN INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| KOYING LIMITED | Private company limited by shares | Live |
| KOYIP LIMITED | Private company limited by shares | Live |
| KOYIU LIMITED | Private company limited by shares | Live |
| KOYIU DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| KOYIU ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| KOYIU INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| KOYIU KAMLI SIX-ENCIRCLES FELLOW NATIVES ASSOCIATION LIMITED | Company limited by guarantee | Live |