Indonesian English Glossary of Legal Terms
| Indonesia | English |
| obligasi | bonds (convertible / exchangeable) |
| obligatoir | promise to perform |
| obyek (perjanjian) | object (of the contract) |
| oligopoli | oligopoly |
| orang yang membantu melakukan tindak pidana | accomplice / accessory |
| ordonansi | ordinance |
| Organisasi Kekayaan Intelektual se-Dunia (WIPO) | World Intellectual Property Organization (WIPO) |
| Organisasi Non Pemerintah (LSM) | Non-Government Organization (NGO) |
| Organisasi Perdagangan se-Dunia (WTO) | World Trade Organization (WTO) |
