PUK may refer to:

• PUK, or Busan–Gyeongnam Area, a metropolitan area in South Korea

• Partia e Unitetit Kombëtar or National Unity Party, an Albanian political party
• Patriotic Union of Kurdistan, a Kurdish political party

• 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

• Niels Kristian Iversen or PUK, Danish speedway-rider

• Puck (disambiguation)

This disambiguation page lists articles associated with the title PUK.
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