Altus is a town in Franklin County, Arkansas, United States. It is part of the Fort Smith, Arkansas-Oklahoma Metropolitan Statistical Area. The population was 817 at the 2000 census. When the Iron Mountain Railroad laid rails up the Arkansas River Valley in the 1870s from Little Rock to the Oklahoma border at Fort Smith, Altus was the highest point on the track.
Altus is located in the Boston Mountain range between the Ozark Mountains to the north and the Ouachita Mountains to the south. The soil type here is generally Linker on the hilltops; a sandy loam, slightly acid soil and good for grape growing. Several wineries are located in Altus and it is the location of the Altus American Viticultural Area.
Altus is the site of Our Lady of Perpetual Help Church (St. Mary's Catholic Church), of which is on the National Register of Historic Places. St. Mary's Catholic Church was built in 1902 and is known for its beautiful paintings, ornate gold leaf walls, and Roman architecture.