POS, Pos or PoS may refer to:



  • Point of sale, the location where a business transaction occurs
    • POS terminal, a device by which sales transactions can be directly debited to the customer's bank account

Health and medicine


  • Part of speech, the role that a word or phrase plays in a sentence
  • Piece of shit, a profanity saying something is of poor quality or broken, can also refer to a contemptible person.
  • POS, Sayula Popoluca (ISO 639-3 language code), an indigenous language spoken in Veracruz, Mexico


  • P.O.S, Stefan Alexander (b. 1981), a musical artist based in Minneapolis, Minnesota
  • Pain of Salvation, a Swedish progressive metal band
  • Paavo Siljamäki, a Finnish trance musician
  • Posdnuos, Kevin Mercer (b. 1969), a hip-hop artist from New York, best known for being one-third of the hip hop trio De La Soul




  • P/OS, the Professional Operating System sold by Digital Equipment Corporation for their PRO-300, PRO-350, and PRO-380 PDP-11-compatible line of personal computers
  • Packet over SONET/SDH, a communications protocol for transferring packets over fiber networks
  • Perq Operating System, operating system for PERQ workstations
  • Proceedings of Science, an electronic publishing service for proceedings of scientific conferences


Other uses

  • Phi Omega Sigma, a Greek name for 5 different student organizations
  • Priory of Sion, a fictitious secret society
  • Product of Sums, a canonical form in boolean algebra
  • Public open space in planning

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