Coffeetown Grist Mill is a historic grist mill located at Williams Township, Northampton County, Pennsylvania.

The building measures 36 feet by 50 feet, and assumed its present size with additions made in the 19th century.

The mill was converted to a fertilizer factory in the 1920s.

The building was also used as a temporary schoolhouse and post office.

It was added to the National Register of Historic Places in 1977.