The Mexborough and Swinton Traction Company was the name adopted by the Mexborough & Swinton Tramways Company in 1929 following the introduction of trolleybuses on all its routes. It operated in the West Riding of Yorkshire, England, over routes serving Manvers Main Colliery, Wath upon Dearne and the towns of Rotherham, Rawmarsh, Swinton, Mexborough, Conisbrough and the estate at Conanby. The first opening took place in 1907 and was owned by the National Electric Construction Co., becoming part of the British Electric Traction Group in 1931.