Landseer (February 28, 1999 – October 26, 2002) was a Thoroughbred racehorse. A son of Champion sire Danehill, he was out of the mare, Sabria, whose sire Miswaki was the sire of the great filly Urban Sea. Owned and raced by Michael Tabor & Sue Magnier, the colt was conditioned by the Irish trainer, Aidan O'Brien.