Acatenango (1982–2005) was a German Thoroughbred racehorse. Sired by the Deutsches Derby winner and German Champion sire, Surumu, he was out of the English mare Aggravate. Acatenango's ancestry includes German Champion sire Dark Ronald, the French Champion sire, Tantieme, English Triple Crown champion Gainsborough, and the most influential Italian sire, Nearco. In 1987, Acatenango won his second straight Grosser Preis von Baden and was third to winner Triptych in the Coronation Cup at Epsom Downs in England. His performances earned him his third consecutive German Horse of the Year title.