Sarben is an unincorporated community and census-designated place in Keith County, Nebraska, United States. As of the 2020 census, Sarben had a population of 31.
Sarben had its start by the building of the Union Pacific Railroad through that territory. Sarben took its name from "Aksarben", or "Nebraska" spelled backwards.
Sarben is in eastern Keith County, in the valley of the North Platte River. It is via local roads northeast of Paxton and west of Sutherland. It is northeast of Ogallala, the Keith county seat.
According to the U.S. Census Bureau, the Sarben CDP has an area of , all land.