PPR may refer to:
Politics and government Partido Popular Republicano, a political party in El Salvador Partido Progressista Reformador, a Brazilian party (1993–1995) Pirate Party of Russia (founded 2009) Policía de Puerto Rico, the Spanish abbreviation for the Puerto Rico Police Polish People's Republic, a Warsaw Pact member state (1947–1989) Politieke Partij Radicalen, a Dutch party (1968–1990) Polska Partia Robotnicza, the Polish Workers' Party (1942–1948) Puerto Ricans for Puerto Rico Party (; founded 2003) Romanian Popular Party, a Moldovan political party (founded 2013)
Science, technology and mathematics Pentatricopeptide repeat, a sequence motif in genetics Peste des petits ruminants, or ovine rinderpest, a disease mainly of sheep and goats Polypropylene random copolymer, a plastic used for potable water pipework Portland Pattern Repository, a web repository for computer programming design patterns Projection Pursuit Regression, a statistical learning method Pulsed Plasma Rocket, a form of nuclear pulse propulsion, a pure-fission variant of PuFF under development by Howe Industries for NASA
Other uses PPR (company), a French luxury-brands and retail conglomerate Philosophy and Phenomenological Research, a bimonthly academic journal Points per reception, a scoring system for fantasy American football Private product remaining, a macroeconomic indicator Proper, in heraldry; see Prior Permission Required, permission to land at an airport; see Post-punk revival, an indie rock subgenre