Maxios (foaled 5 April 2008) is a British-bred Thoroughbred racehorse and sire. He showed great promise as a juvenile in 2010 when he was unbeaten in two races including the Group 3 Prix Thomas Bryon but in the following year he failed to win or place in four starts. In 2012 he showed improvement, winning two minor races in spring and then taking La Coupe de Maisons-Laffitte in September. He reached his peak as a five-year-old in 2013 when he won the Prix d'Harcourt and went on to record Group 1 victories in the Prix d'Ispahan and the Prix du Moulin. At the end of the year he was retired from racing to become a breeding stallion in Germany.