Diksmuide (ˌdɪksˈmœy̯də; Dixmude, diksmyd; Diksmude) is a Belgian city and municipality in the Flemish province of West Flanders. The municipality comprises the city of Diksmuide proper and the former communes of Beerst, Esen, Kaaskerke, Keiem, Lampernisse, Leke, Nieuwkapelle, Oostkerke, Oudekapelle, Pervijze, Sint-Jacobs-Kapelle, Stuivekenskerke, Vladslo and Woumen.
Most of the area west of the city is a polder riddled with drainage trenches. The major economic activity of the region is dairy farming, producing the famous butter of Diksmuide.
The 9th-century Frankish settlement of Dicasmutha was situated at the mouth of a stream near the River Yser (IJzer). The name is a compound of the Dutch words dijk (dike) and muide (river mouth). By the 10th century, a chapel and marketplace were already established. The city's charter was granted two centuries later and defensive walls built in 1270. The economy was already then based mainly on agric