Byrd began his coaching career in 2003 as a volunteer with the St. Louis Rams. He was promoted to assistant secondary coach in 2005. On February 20, 2006, Byrd was hired by the Chicago Bears. In 2007, he served as the assistant defensive backs coach after holding the position of defensive quality control coach in his first year with the team. Byrd was promoted to assistant defensive backs/safeties coach on January 16, 2008. Byrd was fired on January 19, 2013. He became the Tampa Bay Buccaneers cornerbacks coach in 2014.