The Cross S Ranch Headquarters is a historic building located in farmland 5 miles (8.0 km) south of Olustee, Oklahoma.

By 1902, the ranch had decreased in size due to homesteaders and raised horses rather than cattle.

The ranch eventually became a wheat farm, reflecting a broader shift in Jackson County agricultural production.

A larger wheat farm purchased the ranch in the 1970s, and the headquarters building is all that remains of the original property.

This article about a property in Oklahoma on the National Register of Historic Places is a stub.