Thomas Chandler Gailey, Jr. is a National Football League offensive coordinator for the Kansas City Chiefs. He was formerly head coach of the Georgia Tech Yellow Jackets football team and the Dallas Cowboys.

Gailey had previously served as offensive coordinator for the Miami Dolphins in 2000-01 when the Dolphins posted consecutive 11-5 records. He was on the Pittsburgh Steelers staff from 1994-97 when the Steelers won four straight AFC Central titles and played in one Super Bowl . He was offensive coordinator in 1997 when Pittsburgh ranked sixth in the NFL in total offense and seventh in scoring.