PSU

PSU may refer to:

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)

Universities

 * Pacific States University
 * Palawan State University
 * Pangasinan State University
 * Papua State University
 * Partido State University
 * Pembroke State University
 * Pennsylvania State University
 * Pittsburg State University
 * Plattsburgh State University
 * Plymouth State University
 * Portland State University
 * Prince of Songkla University
 * Prince Sultan University
 * Puntland State University

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

 * Passenger service unit, above each seat in a passenger airplane
 * Police support unit (United Kingdom)
 * Polysulfone, family of high performance thermoplastics
 * Power supply unit, an electronic device
 * Power supply unit (computer)
 * 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