PQ1 or variation, may refer to:
Convoy PQ 1, WWII Allied Arctic Convoy Persona Q: Shadow of the Labyrinth, a 2014 video game Police Quest: In Pursuit of the Death Angel, 1987 video game PQ: Practical Intelligence Quotient, a 2005 video game PQ1, a rating used for the UK Royal Mail in Address Point
See also PQ (disambiguation) PQI (disambiguation) PQL (disambiguation)