PST or pst may refer to:

Time zones

  • Pacific Standard Time, UTC−08:00 (western North America)
  • Pakistan Standard Time (usually PKT), UTC+05:00
  • Philippine Standard Time (also PHST or PHT), UTC+08:00

Science and technology

  • Lead scandium tantalate, a ceramic material
  • Partial stroke testing, of valves
  • Penoscrotal transposition, in medicine
  • Personal Storage Table, a file format used in Microsoft applications
  • Planar separator theorem, in graph theory
  • Pocket set theory, in mathematics
  • Post-stall technology, an aircraft control system
  • Program structure tree, in computer programming
  • P<sub>st</sub><sup>LM</sup>, short-term light flicker metric
  • Puccinia striiformis f.sp. tritici, or wheat yellow rust

Economics and taxes

  • Prebisch–Singer thesis, or Prebisch–Singer hypothesis
  • Provincial Sales Tax, a sales tax in some Canadian provinces

Places

  • Trail of Remembrance and Comradeship (), a walkway in Ljubljana, Slovenia
  • Poznań Fast Tram (), Poland
  • Prestonpans railway station, East Lothian, Scotland, a station code

Other uses

  • Norwegian Police Security Service ()
  • Planescape: Torment, a 1999 video game
  • Proto-Sino-Tibetan language
  • Social Labour Party (Portuguese: Partido Social Trabalhista), a defunct political party in Brazil
  • , in linguistics, an abbreviation for past tense