Dewsbury is a market town in the Metropolitan Borough of Kirklees in West Yorkshire, England. It lies on the River Calder and on an arm of the Calder and Hebble Navigation waterway.
It is to the west of Wakefield, east of Huddersfield and south of Leeds. Historically a part of the West Riding of Yorkshire, after undergoing a period of major growth in the 19th century as a mill town, Dewsbury went through a period of decline. Dewsbury forms part of the Heavy Woollen District of which it is the largest town. The population of the built-up area was 63,722 at the 2021 Census.
Dewsbury has a number of districts with different geographical and socio-economic patterns, they are, Chickenley, Crackenedge, Dewsbury Moor, Earlsheaton, Eastborough, Eightlands, Flatts, Ravensthorpe, Savile Town, Shaw Cross, Scout Hill, Thornhill Lees, Westborough, Westtown. Batley Carr, Hanging Heaton and Staincliffe have areas which lie in both Dewsbury and neighbouring Batley. Thornhill, Briestfield and Whitley Lower are part of Dewsbury unparished area. Thornhill was annexed in 1910.