Phil Hardberger (born July 27, 1934) is a former mayor of San Antonio, Texas. He took office in June 2005. He is a Democrat; however, as with all mayoral, city council, and school board positions in Texas, Hardberger was elected on a non-partisan ballot.

Hardberger was born in Morton, the seat of Cochran County in West Texas, to Homer Reeves Hardberger (1908- 1986) and the former Bess Scott (1913-2008). In 1943, the family moved to O'Donnell in Lynn County near Lubbock. As a youth, Hardberger worked in cotton gins. Mrs. Hardberger, a native of Burnet County, taught school in O'Donnell for thirty-three years and was a 1955 graduate of Texas Tech University in Lubbock. Son Phil graduated the same year from Baylor University in Waco. Hardberger was reared in the Baptist Church. He has a younger sister, Jan Peranteau, who was born in 1945 in Lamesa, the seat of Dawson County, also in the Texas South Plains country. Hardberger said that his mother was "the single most cheerful person I've ever known. She loved the trees and flowers here in San Antonio and always had a positive spirit."

After Baylor, Hardberger was a captain in the United States Air Force and piloted the B-47 bomber. He was the executive secretary of the Peace Corps during the administration of U.S. President John F. Kennedy. He was a special assistant to the director of the U.S. Office of Economic Opportunity under President Lyndon B. Johnson.