Barbaro (April 29, 2003 – January 29, 2007) was a champion American Thoroughbred racehorse who won the 2006 Kentucky Derby but shattered his leg two weeks later in the Preakness Stakes which ended his racing career and eventually led to the need to euthanize him. He was a third-generation descendant of Mr. Prospector, and as such Barbaro was related to many notable racehorses including Afleet Alex, Smarty Jones, Funny Cide and Fusaichi Pegasus.