As of the 2024 season, Mike Tomlin, John Harbaugh, and Andy Reid are the longest-tenured active coaches in the NFL. Tomlin has been with the Pittsburgh Steelers for 18 years, Harbaugh has represented the Baltimore Ravens for 17 years, and Reid has led the Kansas City Chiefs for 12 years.
Let's look back at the longest-tenured head coaches in NFL history.
T1. Curly Lambeau, Packers: 29 seasons (1921-49)
Lambeau founded the Green Bay Packers in 1919 and played 10 seasons with the team before becoming a player-coach in 1929.