| OIKO LIMITED | Private company limited by shares | Live |
| OIKODOMEO MANPOWER RESOURCES COMPANY LIMITED | Private company limited by shares | Live |
| OikoLab Limited | Private company limited by shares | Live |
| OIKOS ADVERTISING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Alpha Oikos Limited | Company limited by guarantee | Live |
| OIKOS ASIA HEALTHCARE LIMITED | Private company limited by shares | Live |
| OIKOS (CHINA) LIMITED | Private company limited by shares | Live |
| OIKOS CO., LIMITED | Private company limited by shares | Live Commenced dormancy on 31-Dec-2013 |
| OIKOS CONSULTING LIMITED | Private company limited by shares | Live |
| HUILI OIKOS COATING (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| OIKOS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| OIKOS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Oikos Land Company Limited | Private company limited by shares | Live |
| OIKOS TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |