Martin Edward Schottenheimer (/ˈʃɒtənhaɪmər/; born September 23, 1943) is a former professional American football player and coach. Over his career, he has served as head coach of the Cleveland Browns, Kansas City Chiefs, Washington Redskins, and San Diego Chargers. He has the most wins of any NFL coach since 1966 to never coach a team in a Super Bowl (which was first held in that year). He was fired from his head coaching position with the San Diego Chargers in 2007, after leading the Chargers to a 14–2 regular season record but a disappointing second round playoff loss. He later emerged as the head coach of the Virginia Destroyers of the United Football League, where he would win his only championship as a coach in his lone season there.
In 21 years as an NFL head coach, Schottenheimer won 200 regular season games and 5 out of 18 games in the postseason. He had only two seasons with more losses than wins in his entire career, and none until his 15th season; the Browns finished with a losing record in his first season, but with Schottenheimer as their coach, they were 4–4. He is the only coach in NFL history with at least 200 wins that has a losing playoff record.