Koksijde (French: Coxyde, West Flemish: Koksyde) is a town and a municipality in Belgium. It is located on the North Sea coast in the southwest of the Flemish province of West Flanders.
The municipality comprises apart from Koksijde, the villages of Oostduinkerke, St-Idesbald and Wulpen.
On January 1, 2006, Koksijde municipality had a total population of 21,269 on a total area of 43.96 km², which gives a population density of 484 inhabitants per km².
Since 1995 Marc Vanden Bussche has been mayor of Koksijde.