The River Meden is a river in Nottinghamshire, England. Its source lies just north of Huthwaite, near the Derbyshire border, and from there it flows north east through Pleasley and Warsop before merging temporarily with the River Maun near Bothamsall. The rivers divide after a short distance and go on separately to a point near Markham Moor where they once more combine to form the River Idle.