PST

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, aircraft control system
 * Program structure tree, in computer programming
 * PstLM, short-term light flicker metric
 * Puccinia striiformis f.sp. tritici, or Wheat yellow rust

Economics and taxes

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

Places

 * Trail of Remembrance and Comradeship (Pot spominov in tovarištva), a walkway in Ljubljana, Slovenia
 * Poznań Fast Tram (Poznański Szybki Tramwaj), Poland
 * Prestonpans railway station, East Lothian, Scotland, station code

Other uses

 * Norwegian Police Security Service (Politiets sikkerhetstjeneste)
 * 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, glossing abbreviation for past tense