Donald Eugene Ulrich (b. Aug. 15, 1941, Olympia, Thurston County, Washington, USA, d. Jul. 17, 1974, San Luis Obispo County, California, USA) was a Country Western Musician. Born Donald Eugene Ulrich, he was instrumental in defining the Bakersfield sound of country music. He was Buck Owens' lead guitarist, harmonizer and fiddle player, and leader of Owens' back-up band the Buckaroos, until his death in a motorcycle accident.

He is buried in Hillcrest Memorial Park, Bakersfield, Kern County, California, USA.