UPR

UPR may refer to:
*Ukrainian People's Republic, a short-lived independent Ukrainian state
*Unprocessed Packet Rate, the price of a packed not industrialized product.
*Unconditional positive regard, key concept in person-centered psychotherapy
*Unia Polityki Realnej, a political party in Poland
*University of Puerto Rico, the public university of Puerto Rico, or one of its 11 campuses:
**University of Puerto Rico, Medical Sciences Campus
**University of Puerto Rico at Aguadilla
**University of Puerto Rico at Arecibo
**University of Puerto Rico at Bayamón
**University of Puerto Rico at Carolina
**University of Puerto Rico at Cayey
**University of Puerto Rico at Humacao
**University of Puerto Rico at Mayagüez
**University of Puerto Rico at Ponce
**University of Puerto Rico at Rio Piedras
**University of Puerto Rico at Utuado
*Unfolded protein response, a biological response in the endoplasmic reticulum when a large proportion of proteins refuse to fold.
*Uppermost Positive Regards, a valediction commonly used in personal correspondence (rather than business)