Pancho Segura, born Francisco Olegario Segura (June 20, 1921) was a leading tennis player of the 1940s and 1950s, both as an amateur and as a professional. In 1950 and 1952, as a professional, he was the World Co-Number 1 player.
He was born in Ecuador, but moved to the United States in the late 1930s and is a citizen of both countries. By the time he was 17 Segura had won a number of tennis titles in Latin America and was offered a tennis scholarship at the University of Miami.
He won the NCAA Singles Championships for three straight years: in 1943, 1944, and 1945. He was also the No. 3 ranked American player during those years. He won the U.S. Indoors in 1946 and U.S. Clay Courts in 1944 but was never able to win the United States Championships at Forest Hills, NY although he reached the Semi-finals a number of times.