Tracy Leonard Walker III (born February 1, 1995) is an American professional football safety who is a free agent.

[3] On January 20, 2018, Walker played in the 2018 East–West Shrine Game and recorded two tackles and deflected a pass, but dropped an interception and was part of the East team that lost 14–10 to the West.

On April 5, 2018, Walker attended Louisiana's pro day, but chose to stand on his combine numbers and only performed positional drills.

[12] In a Week 11 matchup against the Carolina Panthers, Walker recorded his first interception when he picked off Cam Newton in a contested grab for the ball.

[14] In the offseason, the Lions released veteran Glover Quin which allowed more room for Walker to move up the depth chart.

However, Walker shined in Week 17 against the Minnesota Vikings, leading the team with 13 tackles (11 solo) and recording his first career sack on Kirk Cousins during the 37–35 loss.