Banner is an unincorporated community in southern Sheridan County, Wyoming, United States. It lies near Interstate 90, south of the city of Sheridan, the county seat of Sheridan County. Its elevation is 4,580 feet. Although Banner is unincorporated, it had a post office, with the ZIP code of 82832, which closed in 2004. Public education in the community of Banner is provided by Sheridan County School District #2.
Story lies three miles to the southwest, and the Bighorn Mountains are to Banner's west. The town is accessible via U.S. Route 87.