Gilberto Martínez Vidal (born October 1, 1979) is a Costa Rican former professional footballer who played as a defender.

Born in the Pacific Coast town of in Golfito, Costa Rica, Martínez made his professional debut for Deportivo Saprissa on 19 January 2000 in a 4–0 win over Cartaginés.

[4] He ultimately made his playing comeback in the 2008–09 season, confirming himself once again as a key player for his club, then in Serie B.

[6][7] He was part of Costa Rica's national team in the 1999 FIFA World Youth Championship held in Nigeria.

[8] Nicknamed Tuma, Martínez made his debut for Costa Rica in a January 2001 FIFA World Cup qualification match against Guatemala and earned a total of 61 caps, scoring no goals.