Peter Clentzos (June 15, 1909 in Oakland, California — September 11, 2006 in Rancho Mirage, California) was an American pole vaulter and the son of Greek immigrants who competed for Greece in the 1932 Summer Olympics.
Clentzos attended the University of Southern California, where he was a member of the track and field team. For three years he lettered on the USC team coached by Dean Cromwell and that won NCAA team titles in 1930 and 1931.
He tried out as a pole vaulter for the United States team in the 1932 Olympics, but fell just short of qualifying. His Greek heritage allowed him to vie for one of the 16 spots on Greece's team.
Clentzos' personal best in the pole vault competition was 13 feet, 9 inches. In the event at the 1932 Olympics, however, he cleared only 12 feet 3.5 inches, earning him seventh place.
After the war, Clentzos and his wife Helen moved to Pasadena, California, where he initially worked as a teacher and coach at Roosevelt High School. He later served as an administrator at Narbonne High School and Boys Vice-Principal at Franklin High School in Northeast Los Angeles.
Clentzos was co-founder and meet announcer at the Pasadena/Crown Valley Senior Olympics until shortly before his death. He was given the Senior Service Award by the Pasadena Senior Center in 2004.