Leon Lett Jr. (born October 12, 1968) is a former American football defensive tackle and coach who is the assistant defensive line coach for the Dallas Cowboys of the National Football League (NFL). Lett previously played in the NFL for 11 seasons and spent the majority of his career with the Cowboys, who selected him in the seventh round of the 1991 NFL Draft. During his final season in 2001, he played for the Denver Broncos.