PUK may refer to:
Geographical
edit- PUK, or Busan–Gyeongnam Area, a metropolitan area in South Korea
Political
edit- Partia e Unitetit Kombëtar or National Unity Party, an Albanian political party
- Patriotic Union of Kurdistan, a Kurdish political party
Technological
edit- Pin Unlock Key or personal unblocking code (PUC), a code used in GSM mobile phones
- PUK welding, a precision welding system used in the jewellery industry
People
edit- Niels Kristian Iversen or PUK, Danish speedway-rider