COJ
| Acronym | Definition |
|---|---|
| COJ | Constitution of Japan |
| COJ | Confession of Judgment (law) |
| COJ | Corel Office for Java |
| COJ | Chronicles Online Journal (aviation) |
| COJ | Court of Justice |
| COJ | City of Jacksonville, Florida |
| COJ | Confédération des Organisations de Jeunesse |
| COJ | Club Olympique de Joinville (French olympic club) |
| COJ | Cup O'Joe |
| COJ | Club Ornithologique Jdidi (French; Belgian ornithological club) |
| COJ | CMIS Over Java |
| COJ | Council of Jordan |