PQ

PQ may refer to:

Places

 * Province of Quebec, the largest province of Canada by area
 * Rancho Peñasquitos, San Diego, informally

Politics and law

 * Parti Québécois, a provincial political party in Quebec, Canada
 * Parliamentary question, a question posed during Question time in a Westminster system legislature
 * Previous question, a motion in Robert's Rules of Order to close debate

Computing and electronics

 * Perceptual Quantizer, a transfer function for video display
 * Picture quality; see video quality
 * Power quality, the set of limits of electrical properties
 * Priority queue, an abstract data structure

Software

 * PowerQuest, a producer of computer HDD software tools for the DOS/Windows platform
 * Priority queuing, a data packet scheduling technique
 * libpq, a C library for the PostgreSQL database

Videogames

 * Police Quest, a video game series
 * Police Quest: In Pursuit of the Death Angel (1987 video game), first game in the series
 * PQ: Practical Intelligence Quotient (2005 video game), first game in the series
 * Persona Q: Shadow of the Labyrinth, a 2014 video game

Psychology

 * Play Quotient, a theory in child development developed by Stevanne Auerbach
 * Precision questioning, an intellectual toolkit for critical thinking and for problem solving

Chemistry, biochemistry, pharmacology

 * Performance qualification, in pharmaceutics, part of verification and validation
 * Plastoquinone, a molecule involved in photosynthesis

Other uses

 * PQ International, a polo magazine
 * PQ, outbound Arctic convoys of World War II