PKC may refer to:
- Paroxysmal kinesogenic choreoathetosis, neurological disorder
- Protein kinase C, a family of enzymes
- PKC (conference), an acronym for the International Workshop on Practice and Theory in Public Key Cryptography
- Yelizovo Airport or Petropavlovsk-Kamchatsky Airport, an airport located in Petropavlovsk-Kamchatsky, Kamchatka Krai, Russia, whose IATA code is "PKC"
- PKC Group, a Finnish company
- Product Key Card, a kind of Microsoft software license containing product key found in Microsoft Office
- The "C" variant of the PK machine gun, a Soviet weapon
PKC or Public-Key Cryptography is the short name of the International Workshop on Theory and Practice in Public Key Cryptography (modified as International Conference on Theory and Practice in Public Key Cryptography since 2006), a cryptography conference sponsored by the International Association for Cryptologic Research (IACR).
The first PKC was held in 1998 in Yokohama, Japan, and is held yearly at locations all over the world. Until 2001, all PKC workshops were held in east Asia (Yokohama in 1998, Kamakura in 1999, Melbourne in 2000, and Cheju Island, Korea in 2001), but since then the conference has become more global. Other locations include Paris in 2002, Miami in 2003, Singapore in 2004, Les Diablerets, Switzerland in 2005, New York in 2006, Beijing in 2007. The last two most recent PKC's were held in Gaithersburg (on the campus of the National Institute of Standards and Technology or NIST) and in Taipei (on the campus of Academia Sinica).
PKC (Papendrechtse Korfbal Club) is a Dutch korfball club located in Papendrecht, Netherlands. The club was founded on 2 February 1935 and they play their home games in the PKC-Hal. The team plays in white shirts and green shorts / skirts. The club has around 1000 members, which makes it the biggest korfball club in the world.