Grady Lynn Allen (January 1, 1946 – December 4, 2012) was a professional American football player who played linebacker in the National Football League (NFL) for five seasons for the Atlanta Falcons.

Allen was born in San Augustine, Texas on January 1, 1946.

During his senior year he was a team captain, earned all Southwest Conference honors, and helped A&M to its first Cotton Bowl appearance in 27 years.

They upset Alabama 20–16,[2] and Allen was given the annual Aggie Heart award by the team, Not chosen in the NFL draft, Allen played as a reserve linebacker in 59 games for the Atlanta Falcons over 5 seasons from 1968 until 1972, recording 2 interceptions and 3 fumble recoveries.

His son Dennis served as the head coach of the Oakland Raiders from 2012 until 2014 and the New Orleans Saints from 2022 to 2024.