PK or pk may refer to:
Arts and entertainment Gaming Probability of kill (Pk), in computer games, simulations, models, and operations research Disney's PK: Out of the Shadows, a 2002 video game Player killing, player versus player conflict in MMORPGs and MUDs
Other media PK (film), a 2014 Indian film directed by Rajkumar Hirani and starring Aamir Khan PK (soundtrack), its soundtrack by Shantanu Moitra, Ajay–Atul and Ankit Tiwari Paperinik, a cartoon character Peacekeepers (Farscape), in the Farscape television show
Organisations Pakistan International Airlines (IATA airline code) Polyteknikkojen Kuoro, a Finnish academic male choir Promise Keepers, a Christian men's organization Swedish Publicists' Association (Swedish: ), Swedish journalist organization
People Prashant Kishor (born 1977), Indian political strategist turned politician P.K (producer), of the South Korean music production duo Future Bounce P. K. van der Byl (1923–1999), Rhodesian politician P. K. Subban (born 1989), hockey player Paul Kalkbrenner (born 1977), electronic musician Pawan Kalyan (born 1971), Indian film actor and politician Phil Katz (1962–2000), creator of the PKZIP file compression software Philip K. Wrigley (1894–1977), American chewing gum manufacturer Paul Kagame (born 1957), President of Rwanda Patricia Karvelas, Australian radio presenter, current affairs journalist and political correspondent
Places PK, or Busan–Gyeongnam Area, a metropolitan area in South Korea Pakistan (ISO country code) Possum Kingdom Lake, Texas, US Pickering, Ontario, Canada Peking, old name of Beijing
Science and technology Chemistry and pharmacology pK, negative logarithm of the dissociation constant K (-logK) Pharmacokinetics, a branch of pharmacology dedicated to determining the fate of substances administered to a living organism
Computing Primary key, a unique attribute within the relational model of databases PK, a magic number commonly used in the Zip file format .pk, the country code top level domain (ccTLD) for Pakistan Port knocking, a method of externally opening ports on a firewall Public-key cryptography
Other uses in science and technology PK machine gun, a Soviet weapon, abbreviated from Pulemyot Kalashnikova (Kalashnikov machine gun) Horsepower (Dutch abbreviation paardenkracht) Pentax K-mount, a camera lens mount Catalogue of galactic planetary nebulae (Perek-Kohoutek), in astronomy Renault PK, a car made by Pars Khodro between 2000 and 2005 PK screws, self-tapping screws (Parker-Kalon) for sheet metal
Sports Parkour, the activity or sport of moving rapidly through an area, typically urban, negotiating obstacles by running, jumping, and climbing Penalty kick (association football) Penalty kill, in ice hockey Placekicker, in American football
Other uses Point kilométrique (English: Kilometric point), a measurement of distance travelled Preacher's kid, a child of a pastor SAS President Kruger (F150), a former ship of the South African Navy Psychokinesis, an alleged psychic ability allowing a person to influence objects without physical interaction Pre-kindergarten Indonesia (aircraft registration prefix PK) PK, in List of chewing gum brands
See also Piquet, a trick-taking card game for two players