Daniel Lee "Dan" Dierdorf (born June 29, 1949) is a former American football player and television sportscaster. He played 13 NFL seasons and has worked as a broadcast color analyst since retiring from football.
Born in Canton, Ohio, Dierdorf played football at Glenwood High School in Canton (now GlenOak High School), then the University of Michigan before being drafted by the St. Louis Cardinals in the 2nd round of the 1971 NFL Draft.
At Michigan, Dierdorf was a consensus All-American in 1970 and assisted the team to a 25–6 record in his 3 years as a starter. The Wolverines were Big Ten Champions in 1969. Dierdorf made all-conference in 1969 and 1970. He was chosen for the East-West Shrine Game and Hula Bowl and for the 1971 College All-Star Game. In 2000, Dierdorf was enshrined in the College Football Hall of Fame. While in college, Dierdorf became a member of Kappa Sigma Fraternity.
Dierdorf began his career as a guard and left tackle before settling in as a starter at right tackle in 1974. In 1982 he moved to center and was the starter in that season and became a back-up in his final year, 1983.