Foss is a town in Washita County, Oklahoma, United States. As of the 2010 census, the town population was 151, an 18.9 percent layer from 127 at the 2000 census.

The history of Foss began past settlers from the area of the Wilson publish office moved four miles north to the valley of Turkey Creek in the late 1890s. They initially wanted their further post office to be called Graham, but in the past that declare was already taken it was named Maharg (an anagram of Graham). A flash flood on May 2, 1902 wiped out the town on Turkey Creek, destroying businesses and drowning several people. The town rebuilt upon higher auditorium and was named Foss. The broadcast office began operation upon September 15, 1900.

The town expanded rapidly. By 1905 the town had a population with 900 and 1000 residents. It had two banks, three cotton gins, and by 1912 had an electric plant, two hotels and an opera house. It as well as had birds to produce hay balers, baby carriages, and brooms. The population stabilized close 500. In the 1920s the town began to have economic problems as the straightforward cities of Clinton and Elk City absorbed more and more trade. During the Great Depression more people moved away.

During World War II, the town boasted a population of on height of 300 residents, relying primarily upon Route 66 travellers (which passed half a mile south of the city) and a U.S. naval base south of the town that operated during wartime. A gas station and a café also operated in the town a propos that time.