Louis Henry Kretlow (June 27, 1921 – September 12, 2007)[1] was an American professional baseball pitcher who played in the Major Leagues (MLB) for the Detroit Tigers (1946; 1948–49), St. Louis Browns / Baltimore Orioles (1950, 1953, 1954–55), Chicago White Sox (1950–53), and Kansas City Athletics (1956).

The native of Apache, Oklahoma, threw and batted right-handed, stood 6 feet 2 inches (1.88 m) tall and weighed 185 pounds (84 kg).

Kretlow attended the University of Oklahoma, and appeared in two games for the Sooners.

[2] He left college and served in the U.S. Army Air Forces during World War II (1943–45), before beginning his pro career in 1946.

In 785+1⁄3 innings pitched, he allowed 781 hits, 479 runs (425 earned) and 522 bases on balls.