Aaron Arthur Cook (born 2 January 1991 in Dorchester, Dorset, England) is a British taekwondo athlete who has been ranked the world no. 1 in the men's −80 kg division on multiple occasions. He is a three-time European champion having won the −80 kg title at the European Taekwondo Championships in 2010, 2012 and 2014, and was the world junior champion in the −78 kg division in 2008. He represented Great Britain in the 2008 Olympic Games in Beijing, where he reached the semi-final and was narrowly defeated in the bronze medal match. He was controversially left out of the British team for the 2012 Olympic Games in London despite being the world no. 1-ranked competitor in the −80 kg division when the British Taekwondo Control Board instead selected Lutalo Muhammad (who was ranked world no. 59 in −80 kg and world no. 7 in −87 kg). Following this, Cook moved to the Isle of Man. He has represented the Isle of Man instead of Great Britain in international tournaments since February 2013.