Pancho Segura, Ecuadorian tennis player
Francisco Olegario Segura (June 20, 1921 – November 18, 2017), better known as Pancho "Segoo" Segura, was a leading tennis player of the 1940s and 1950s, both as an amateur and as a professional. He was born in Guayaquil, Ecuador, but moved to the United States in the late 1930s. Throughout his amateur career he was listed by the USTA as a "foreign" player resident in the U.S. As a professional player, he was referred to as the "Ecuadorian champ who now lives in New York City". After acquiring U.S. citizenship in 1991 at the age of seventy, Segura was a citizen of both countries, although he never represented the U.S. in tennis competition.

He is the only player to have won the Cleveland/Forest Hills US Pro and International Pro titles on three different surfaces (which he did consecutively from 1950–1952). He won the inaugural professional Tournament of Champions at Sydney in 1957. He won the L. A. Masters tournament in 1958. In 1950, 1951, and 1952, as a professional, he was the world No. 1 player in the USPLTA rankings and was also ranked world number one for 1950 and 1952 in the PTPA rankings.

Segura's most potent shot was considered to be his double-handed forehand. His less-potent backhand was single-handed.