Dewsbury is a historic market, mill and minster town within the Metropolitan Borough of Kirklees, in West Yorkshire, England. It lies on the River Calder and 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. According to the 2011 census, Dewsbury had a population of 62,945.