PK

• Probability of kill (P_k), 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

• 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

• Pakistan International Airlines (IATA airline code)
• Polyteknikkojen Kuoro, a Finnish academic male choir
• Promise Keepers, a Christian men's organization
• Swedish Publicists' Association (Swedish: {{lang|sw|Publicistklubben}}), Swedish journalist organization

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• Piquet, a trick-taking card game for two players

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