Rosdhu Queen (foaled 10 February 2010) is an Irish-bred, British-trained Thoroughbred racehorse and broodmare. In a racing career which lasted from July 2012 until August 2013 she won four of her eight races. As a two-year-old in 2012 she was one of the best filly's of her generation in Britain, winning all four of her races including the St Hugh's Stakes, Lowther Stakes and Cheveley Park Stakes. She failed to win in 2013 but finished fourth in the Fred Darling Stakes and produced arguably her best effort when finishing fifth in the Diamond Jubilee Stakes. At the end of her racing career she was sold to become a broodmare for the Coolmore Stud.