| O.T.A. COMPANY LIMITED | Private company limited by shares | Dissolved |
| OTAGIZ LTG LIMITED | Private company limited by shares | Dissolved |
| OTAGO COMPANY LIMITED | Private company limited by shares | Dissolved |
| Otago Bay Limited | Private company limited by shares | Live |
| Otago Advisors Limited | Private company limited by shares | Live |
| OTAGO CO., LIMITED | Private company limited by shares | Live |
| Otago Harbour Limited | Private company limited by shares | Live |
| FRANCE OTAGO INT'L GROUP CO. LIMITED | Private company limited by shares | Dissolved |
| Otago Marketing Limited | Private company limited by shares | Live |
| OTAGO TRADING LIMITED | Private company limited by shares | Dissolved |
| OTAI TIRE CO., LIMITED | Private company limited by shares | Live |
| OTAISU (HONG KONG) LIMITED | | Live |
| OTAK LIMITED | Private company limited by shares | Live |
| OTAK INTERNATIONAL PTY LIMITED | Private company limited by shares | Live |
| ISRAEL OTAK NOBEL CHEMIC-INDUSTRIAL GROUP LIMITED | Private company limited by shares | Dissolved |
| OTAK TRADING PTY LIMITED | Private company limited by shares | Dissolved |
| Otaki Limited | Private company limited by shares | Live |
| Otaki Investment Limited | Private company limited by shares | Live |
| Otakuni Limited | | Live |
| OTAKUPAY LIMITED | Private company limited by shares | Live |
| Otall Limited | | Live |
| OTALY MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| Otamendi Limited | Private company limited by shares | Live |
| OTAMI.COM LIMITED | Private company limited by shares | Dissolved |
| OTANI COMPANY LIMITED | Private company limited by shares | Dissolved |
| OTANI INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| OtanOlogy Limited | | Live |
| Otanta Limited | Private company limited by shares | Live |
| O-TAPE COMPANY LIMITED | Private company limited by shares | Live |
| OTAR INTERNATIONAL NEW TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| OTARD COMPANY LIMITED | Private company limited by shares | Dissolved |
| OTARI LIMITED | Private company limited by shares | Dissolved |
| OTARLEY LIMITED | Private company limited by shares | Live |
| HK OTAS INTERNATIONAL IMPORT&EXPORT TRADE CO., LIMITED | Private company limited by shares | Live |
| OTAT IND COMPANY LIMITED | Private company limited by shares | Live |
| OTATRONIC LIMITED | Private company limited by shares | Dissolved |
| Otaty Limited | Private company limited by shares | Live |
| OTAX HONG KONG LIMITED | Private company limited by shares | Live |
| OTAX INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| OTAX METAL PARTS COMPANY LIMITED | Private company limited by shares | Live |
| OTAZU (ASIA) LIMITED | Private company limited by shares | Live |