IOJ
| Acronym | Definition |
|---|---|
| IOJ | IEE (Institution of Electrical Engineers) Online Journal |
| IOJ | Interest of Justice (legal slang) |
| IOJ | Islami Oikya Jote (political group; Bangladesh) |
| IOJ | Institute of Jamaica (est. 1879; Kingston, Jamaica) |
| IOJ | International Organization of Journalists (Czech Republic) |
| IOJ | Institute Of Jainology (UK) |
| IOJ | Indonesia Open Jazz |