Barnby Dun railway station was a small station on the South Yorkshire Railway's line between Doncaster and Thorne. It served the village of Barnby Dun, near Doncaster, South Yorkshire, England. The original line followed closely the canal bank and the station was resited when the line was 'straightened' in the 1860s. The original station, which was situated across the canal from the village, was opened with the line on 7 July 1856 and closed on 1 October 1866 when the new station, at the opposite side of the village was opened.