Southwestern High School was a high school in Southwest Detroit, Michigan. It was part of the Detroit Public Schools district. The school's area, Southwest Detroit, has the majority of Detroit's Latino population. The school was located in a three-story building. It closed in 2012.

William Barney McCosky was an American outfielder in Major League Baseball. From 1939 through 1953, he played for the Detroit Tigers, Philadelphia Athletics, Cincinnati Reds (1951), and Cleveland Indians (1951–1953). McCosky batted left-handed and threw right-handed. McCosky played in 1,170 games, 535 in center field and 477 in left field. He had a career batting average of .312.