Riddlestar (born April 17, 1998) is a former American Thoroughbred racehorse, who had 10 career starts winning a total of $7,228. He is the son of Belmont Stakes and Preakness Stakes winner Risen Star, and the grandson of Triple Crown Winner Secretariat.
Bred in Kentucky by Dexter A. Gary for Carroll Champagne, he raced his entire career on the tracks of Louisiana. He raced at Evangeline Downs in 6 starts, Delta Downs in 3 Starts, and at Evangeline Downs for 1 start. His lone win came at Delta Downs on January 20, 2002. In his 10 starts, he was ridden by only 3 jockeys-Josh M. Romero, James T. Weatherly, and Jamie Theriot.