Duke of Marmalade (12 March 2004 – 5 November 2021) was an Irish Thoroughbred racehorse and sire. He is best known for winning five consecutive Group One races in 2008, for which he was named European Champion Older Horse. Upon retirement at the end of the 2008 racing season he stood as a stallion for Coolmore Stud, being moved between stud farms in Ireland and Australia (a practice known as shuttling). In July 2014 he was sold and relocated to Drakenstein Stud in South Africa.