Grey Swallow (19 February 2001 – 25 August 2021) was an Irish Thoroughbred racehorse and sire. In a racing career which lasted from July 2003 until October 2006 he competed in five countries and won six of his fifteen races. He was unbeaten in two races as a two-year-old including the Killavullan Stakes and won the Leopardstown 2,000 Guineas Trial Stakes on his first appearance of 2004. After being placed in both the 2000 Guineas and the Irish 2,000 Guineas he recorded his most important success when defeating The Derby winner North Light in the Irish Derby. As a four-year-old he defeated a strong field to win the Tattersalls Gold Cup, but did not win again in Europe. He was campaigned internationally in 2006, winning the Jim Murray Memorial Handicap in California. At the end of his racing