José Martinez de Valdivielso (born José Martinez de Valdivielso López, May 22, 1934) is a Cuban-born former professional baseball player. A shortstop, he appeared in 401 games over all or part of five seasons in Major League Baseball, between 1955 and 1961, for the Washington Senators and their later incarnation, the Minnesota Twins. The native of Matanzas threw and batted right-handed; he was listed as 6 feet 1 inch (1.85 m) tall and 175 pounds (79 kg).