Dewsbury is a market town located in the Metropolitan Borough of Kirklees within West Yorkshire, England. It is situated on the River Calder and an arm of the Calder and Hebble Navigation waterway. Geographically, the town lies to the west of Wakefield, east of Huddersfield, and south of Leeds.
Historically part of the West Riding of Yorkshire, Dewsbury experienced significant growth during the 19th century as a mill town before entering a period of decline. It currently serves as the largest town in the Heavy Woollen District. According to the 2021 Census, the population of the built-up area was 63,722.