| Acronym | Definition |
|---|
| OJ | Orange Juice |
| OJ | Official Journal (European Communities) |
| OJ | Object (assembly language ASM51 assembler control) |
| OJ | Officejet (printer) |
| OJ | Orange Julius (smoothie shop) |
| OJ | Orenthal James (Simpson) |
| OJ | Open Jaw (airfare construction) |
| OJ | Orlando Jordan (wrestler) |
| OJ | Orlando Jones (actor) |
| OJ | Outdoor Japan (magazine) |
| OJ | Only Joking |
| OJ | Ontario Judgments |
| OJ | Organisation Jeunesse (French: youth organization) |
| OJ | Omar Jacobs (Bowling Green State University football quarterback) |
| OJ | Optical Jamming |
| OJ | Offensive Jammer |
| OJ | Orpington Juniors (est. 1965) |
| OJ | oral jejunum (medical) |