Óscar Carmelo Sánchez Zambrana (July 16, 1971 – November 23, 2007) was a Bolivian footballer who played for the Bolivia national football team in the 1994 FIFA World Cup held in the United States.
He made his debut for the national side on April 20, 1994, in a friendly match in Bucharest against Romania.
After five seasons with the atigrados, he was transferred to Argentine club Gimnasia y Esgrima de Jujuy, where he built a solid reputation as a temperamental and tough defender with scoring ability.
His impressive displays rewarded him with a transfer to giant club Independiente in the winter of 1998.
He was offered the manager position of The Strongest, with which he attained an impressive undefeated streak.