John Michelosen (February 13, 1916 – October 17, 1982) was an American football player and coach. He served as the head coach for the Pittsburgh Steelers of the National Football League (NFL) from 1948 to 1951, compiling a record of 20–26–2. From 1955 to 1965 he was the head football coach at his alma mater, the University of Pittsburgh, tallying a mark of 56–49–7.