Leroy Louis Dietzel (January 9, 1931 – February 3, 2018) was an American professional baseball player who played nine Major League games in 1954. A second baseman and third baseman, Dietzel was listed at 6 feet (1.8 m) tall and 190 pounds (86 kg), and threw and batted right-handed. He was born in Baltimore, Maryland. Signed as an amateur free agent in 1950, Dietzel spent five seasons in the minor leagues prior to playing his first MLB game with the Washington Senators. Dietzel died in 2018 in Charlotte, North Carolina, at the age of 87.