The William M. Nash House is a historic house on River Road in Cherryfield, Maine. It is a multiply-altered and renovated structure, now presented as an elaborately decorated 1888 Second Empire house. This design was one of Cherryfield native William A. Allen's most imaginative designs. It was listed on the National Register of Historic Places in 1983, and is a contributing property to the Cherryfield Historic District. The property is owned by Gordon and Cynthia Kelley.