RIJ
| Acronym | Definition |
|---|---|
| RIJ | Right Internal Jugular (vein) |
| RIJ | Refugees International Japan (est. 1979; Tokyo, Japan) |
| RIJ | Retina Institute Japan |
| RIJ | Russell Investments Japan |
| RIJ | Réseau Insertion Jeunes (French: Youth Inclusion Network) |
| RIJ | Réseau d'Information Jeunesse (French: Youth Information Network) |
| RIJ | Repetitive Incomplete Join (Unreal game engine security exploit) |