John Tillman served as CEO of the Illinois Policy Institute from 2007 to 2020, helping turn it into one of the most impactful state-based think tanks in the country. He also served as chairman of the board for 19 years before resigning in 2026.

He currently is CEO of the American Culture Project and the founder and CEO of the Hall of Giants, a major cultural initiative dedicated to celebrating entrepreneurs and all that they do to improve the human condition. To learn more, visit Hallofgiants.org.