Warren Emmett Lahr (September 5, 1923 – January 19, 1969) was a professional American football defensive back who played for the Cleveland Browns for 11 seasons, mainly in the 1950s. He has the second-most career interceptions in Browns team history, with 44. Lahr has the second-most career interceptions in Browns history, trailing only Thom Darden. After leaving the Browns, Lahr settled in Aurora, Ohio and served as a color commentator for Browns games between 1963 and 1967. He died of a heart attack in 1969 at the age of 45.