Frank Jerry Kostro (born August 4, 1937) is a retired American professional baseball player. The native of Windber, Pennsylvania appeared in 266 games over seven seasons (1962–65; 1967–69) for the Detroit Tigers, Los Angeles Angels and Minnesota Twins of Major League Baseball. Following his big league career, Kostro played in Japan in 1970 for the Hankyu Braves. His 114 MLB hits included 17 doubles, two triples, and five home runs.