H. Earl Clack Service Station in Saco, Montana, is a site on the National Register of Historic Places . The service station was added to the Register on August 16, 1994. It has also been known as Clack Station.
It was one of a number of gas stations in H. Earl Clack's chain of filling stations, and was probably built in the early 1930s. It was used as a gas station into the 1960s, and in 1994 served as restrooms for a park.