Sprotbrough Flash, also called Sprotborough Flash, is a nature reserve situated south of Sprotbrough near Doncaster, South Yorkshire, UK on the left bank of the River Don. It is named after its main feature, a long, water-filled depression parallel to the river. The reserve is managed by the Yorkshire Wildlife Trust. It overlaps with Sprotbrough Gorge, a Site of Special Scientific Interest. The size of the protected area is 28 hectares. The Trans Pennine Trail passes through the area.