PLK

PLK may refer to:

• PKP PLK, a Polish railroad company
• PLK Vicwood KT Chong Sixth Form College
• Polska Liga Koszykówki, Polish Basketball League
• Pulkovo Airlines, ICAO airline designator
• M. Graham Clark Downtown Airport, Missouri, USA, IATA code
• Polo-like kinase, regulators of the cell cycle (mitosis)

See also

• Polo-like kinase 1, an enzyme encoded by the PLK1 gene