UPJ
| Acronym | Definition |
|---|---|
| UPJ | University of Pittsburgh at Johnstown (Pennsylvania) |
| UPJ | Ureteropelvic Junction |
| UPJ | Unternehmen: Partner der Jugend (Germany) |
| UPJ | United for Peace and Justice |
| UPJ | Union des Entreprises pour La Protection des Jardins (French: Union of Companies for the Protection of Gardens; France) |
| UPJ | Universal Pictures Japan (movie studio) |
| UPJ | Union Polynésienne pour La Jeunesse (French: Polynesian Union for Youth; French Polynesia) |