Thor's Echo (foaled February 19, 2002 in California) is an American Champion Thoroughbred racehorse best known for becoming only the second California-bred horse to ever win a Breeders' Cup race. Thor's Echo began racing at age two and in 2005 as a three-year-old he won the WinStar Derby. In 2006, he had an outstanding year, winning the Frank J. DeFrancis Memorial Dash Stakes and finishing second in both the Dubai Golden Shaheen and the Ancient Title Stakes. In his final start of the year, he won the most important race of his career, the Breeders' Cup Sprint. Thor's Echo's 2006 performances earned him American Champion Sprint Horse honors.