Stone Grist Mill Complex is a historic grist mill complex located at St. Johnsville in Montgomery County, New York. The complex consists of the mill, the remains of a stone impoundment dam, the mill owner's house, bar, wagon shed, and hog house. The mill was built about 1835 and is a 30 by 50 feet gable roofed structure constructed of rough cut, native limestone block laid in random ashlar. The mill is now occupied by a bed and breakfast.
It was added to the National Register of Historic Places in 1996.