Leonard Frank "Fritz" Shurmur (July 15, 1932 – August 30, 1999) was an American football coach. He coached at the University of Wyoming from 1962 to 1974, the last four as head coach, compiling a 15–29 record. Shurmur was subsequently an assistant coach in the National Football League (NFL) with the Detroit Lions (1975–1977), New England Patriots (1978–1981), Los Angeles Rams (1982–1990), Phoenix Cardinals (1991–1993), and Green Bay Packers (1994–1998). He was the winning defensive coordinator in Super Bowl XXXI, following the 1996 season, and was the uncle of former New York Giants (2018–2019) head coach Pat Shurmur. Coach Shurmur was also the author of several books about defense, including Coaching Team Defense (1989), Coaching the Defensive Line (1997) and The Eagle Five Linebacker Def