Old River is an unincorporated community and census-designated place (CDP) in Kern County, California. It is located southwest of Bakersfield, at an elevation of . As of the 2020 census, Old River had a population of 123.
The settlement was founded in the 1870s and named from the old Kern River bed.
Old River first appeared as a census designated place in the 2020 U.S. census.