Manvers Main Colliery was a coal mine, sunk on land belonging to the Earl Manvers on the northern edge of Wath-upon-Dearne, between that town and Mexborough in the Dearne Valley, in the West Riding of Yorkshire, England. The regional headquarters and laboratories of British Coal were situated in the complex. The Manvers Main Colliery Company was responsible, in 1911, for sinking two shafts at Barnburgh, a village about two miles north east. The collieries were connected by a private railway.