POS, Pos or PoS may refer to:
Linguistics Part of speech, the role that a word or phrase plays in a sentence Poverty of the stimulus, a linguistic term used in language acquisition and development Sayula Popoluca (ISO 639-3), an indigenous language spoken in Veracruz, Mexico
People Pos (surname) P.O.S (rapper) (born 1981), or Stefon Alexander, American hip hop artist POS (singer) (born 1998), a Nigerian singer and songwriter Kelvin Mercer (born 1969), also known as Pos, member of the New York hip hop trio De La Soul Pain of Salvation, Swedish progressive metal band Paavo Siljamäki (born 1977), Finnish DJ and producer, member of the English electronic group Above & Beyond
Places Port of Spain, Trinidad and Tobago Piarco International Airport (IATA code), Piarco, Trinidad and Tobago Pomona–Downtown station (Amtrak station code), California, US
Science and technology Political opportunity structure, an approach to explain social movements Polycystic ovary syndrome, a disease of the ovaries Price of stability, in game theory Probability of success, in statistics Product of sums, a canonical form in Boolean algebra
Computing P/OS, operating system of DEC Professional PCs from Digital Equipment Corporation Packet over SONET/SDH, a communications protocol for transferring packets over fiber networks PERQ Operating System, operating system for PERQ workstations Proof of space, a cryptocurrency blockchain distributed consensus method Proof of stake, a cryptocurrency blockchain distributed consensus method
Transportation Post Office Sorting Van, a type of rail vehicle used in a Travelling Post Office train TGV POS, a French high-speed train
Other uses Pos Indonesia, Indonesian postal service Pos Malaysia, Malaysian postal service Phi Omega Sigma (disambiguation), a Greek name for any of five different student organizations Piece of shit, a phrase considered vulgar and profane in Modern English Point of sale, location where payment is accepted Point of service plan, a type of managed care health insurance plan in the US Polytechnic Secondary School (Polytechnische Oberschule), the 10-year general educational system in East Germany Priory of Sion, a fictitious secret society Public open space, a planning term for an outdoor public forum
See also Post Office Square (disambiguation)