Mule Barn was a town in Pawnee County, Oklahoma, United States.

It was located west-northwest of Tulsa, on the west side of Keystone Lake.

According to the United States Census Bureau, the town had a total area of 0.0 square miles (0 km2), all land.

The town was located at 36.21737 N, 96.31142 W. Oklahoma law provides for the dissolution of towns under certain circumstances, including the lack of recent elections.

[4] Mule Barn was dissolved in 2008.