Santiago Rosario, Puerto Rican-American baseball player and coach (b. 1939)

Santiago Rosario (July 25, 1939 – September 6, 2013) was a first baseman and corner outfielder who played briefly for the Kansas City Athletics during the 1965 season. Listed at 5' 11", 165 lb., Rosario batted and threw left handed. He was born in Guayanilla, Puerto Rico.