Rock On Ruby, (foaled 11 May 2005) is an Irish-bred, British-trained Thoroughbred racehorse. A specialist hurdler he is best known for his performances in the 2011–2012 National Hunt season, when he won the Gerry Feilden Hurdle at Newbury in November before winning Britain's most prestigious hurdle race, the Champion Hurdle at Cheltenham on 13 March. After failing to make a mark as a steeplechaser he returned to hurdling and won the Relkeel Hurdle in 2014 and the Ascot Hurdle in 2015.