The 2015 Epsom Derby (known as the Investec Derby for sponsorship reasons) was the 236th annual running of the Derby horse race and took place at Epsom Downs Racecourse on 6 June 2015. The race was won by the favourite, Golden Horn, a British-bred bay colt, owned by Anthony Oppenheimer, trained in Newmarket, Suffolk by John Gosden and ridden by Frankie Dettori.