Wrawby Postmill is a windmill in the unitary authority of North Lincolnshire, England, at Wrawby near Brigg. It was built in 1760 and had common sails. It was working until the 1940s when it became derelict, but it was restored in 1965. It is the last postmill in the north of England. Flour ground at the mill is for sale, and there is a small museum of milling tools.