The Roba Ranch is a pioneer ranch located near the small unincorporated community of Paulina in Crook County, Oregon. The ranch is named for George and Mary Roba, sheep ranchers who acquired the property in 1892. Most of the important ranch buildings were constructed by the Roba family between about 1892 and 1910. Today, the ranch covers 1,480 acres (6.0 km2) and is privately owned. The ranch was listed on the National Register of Historic Places in 2007.