Louis Joseph "the Battler" Rymkus (November 6, 1919 – October 31, 1998) was an American football player and coach in the All-America Football Conference (AAFC), National Football League (NFL) and American Football League (AFL). Playing as a tackle for the Cleveland Browns in the AAFC and NFL in the late 1940s and early 1950s, Rymkus provided pass protection for quarterback Otto Graham as the team won five league championships. Following his playing career, Rymkus took a number of assistant coaching jobs before serving as the first head coach of the AFL's Houston Oilers in 1960. The team won the league's first championship, but Rymkus was fired by Oilers owner Bud Adams after a slow start in 1961.