Ghostzapper (foaled April 6, 2000) is a Thoroughbred racehorse who won the Breeders' Cup Classic in 2004, outdistancing Roses in May by three lengths in a track record time of 1:59.02. His gate-to-wire Classic victory completed a 4-for-4 season, which earned him the 2004 Eclipse Award for Horse of the Year. He was also ranked "World's Top Ranked Horse" for 2004 as compiled by the World Thoroughbred Racehorse Rankings.