PSU or psu may refer to:
Organizations Education United States Pacific States University, a private university in Los Angeles, California Pembroke State University, a public university in Pembroke, North Carolina Pennsylvania State University, a public university in Pennsylvania Pittsburg State University, a public university in Pittsburg, Kansas Plattsburgh State University, a public university in Plattsburgh, New York Plymouth State University, a public university in Plymouth, New Hampshire Portland State University, a public university in Portland, Oregon
Worldwide Palawan State University, a public university in Puerto Princesa, Philippines Pangasinan State University, a public university in Pangasinan, Philippines Papua State University, a public university in West Papua, Indonesia Partido State University, a public university in Camarines Sur, Philippines Prince of Songkla University, a public university in southern Thailand Prince Sultan University, a private university in Riyadh, Saudi Arabia Puntland State University, a public university in Garowe, Puntland, Somalia
Military Police Support Unit, a paramilitary wing of the Zimbabwe Republic Police Port Security Unit, a U.S. Coast Guard expeditionary force protection unit
Political parties Parti Socialiste Unifié (disambiguation), various parties United Socialist Party (Bolivia), Bolivia (Partido Socialista Unificado)
Other organizations Personal Support Unit, a UK charity assisting individuals in court proceedings Prudential Staff Union, former trade union in the UK Public sector undertakings in India, companies owned by government in India
Other uses Power supply unit (computer) Police support unit (United Kingdom) Passenger service unit, above each seat in a passenger airplane Polysulfone, family of high performance thermoplastics Phantasy Star Universe, a persistent ORPG game by SEGA for PlayStation 2, Xbox 360 and PC Practical salinity unit, a unit for quantifying a fluid's salinity Primary sampling unit, in sampling (statistics) Program Storage Unit, a chip as used e.g. in the Fairchild F8 microprocessor Projective special unitary group, a mathematical quotient Prueba de Selección Universitaria, public university admission test in Chile