The Dearne Valley is an area of South Yorkshire, England, along the River Dearne. It encompasses the towns of Wombwell, Wath-upon-Dearne, Swinton, Conisbrough and Mexborough, the large villages of Ardsley, Bolton on Dearne, Goldthorpe, Thurnscoe, Darfield, Stairfoot and Brampton Bierlow, and many other smaller villages and hamlets.