Look up PST or pst in Wiktionary, the free dictionary.

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
• P_st^LM, 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 (Slovene: Pot spominov in tovarištva), a walkway in Ljubljana, Slovenia
• Poznań Fast Tram (Polish: Poznański Szybki Tramwaj), Poland
• Prestonpans railway station, East Lothian, Scotland, station code

Other uses

• Norwegian Police Security Service (Norwegian: 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