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