Aaron Arthur Cook (born 2 January 1991) is a taekwondo athlete who has represented Great Britain (the nation of his birth), the Isle of Man, and Moldova.

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 represented the Isle of Man in international tournaments from February 2013 until 2015 when following further discussions with the Great Britain authorities, Cook sought and obtained Moldovan citizenship and announced that he would compete for Moldova.

At the 2015 World Taekwondo Championships, Cook represented his new country for the first time, losing to former Great Britain teammate Damon Sansum in the semi-final.

He then went to compete and secured his place on the British team for the 2007 World Taekwondo Championships at a closed-door round robin competition held at Loughborough University.

In the second round he faced the toughest opponent of his young career, Hadi Saei of Iran who had won gold medals at both the 2005 World Taekwondo Championships and the 2004 Olympic Games.

Later in his debut year, Cook qualified for a spot on the British team for the 2008 Olympic Games by competing at the 2007 World Qualification Tournament held at the MEN Arena in Manchester.

He was baffled that the British supporting team did not make an appeal during the first round of the bout when the judges missed a clear offensive kick which connected with the Chinese fighter's head which would have given Cook a 2–1 lead.

After leaving the British Taekwondo set-up, he won a number of tournaments including the Olympic test event in London in December 2011 as well as successfully defending his −80 kg title at the 2012 European Championships.

[citation needed] The British Taekwondo Control Board selected Lutalo Muhammad as their competitor in the −80 kg instead of Cook for the olympics.

His omission was controversial and he considered legal action to overturn the decision, his agent saying: "If the British world number one and reigning European Champion does not compete, it will be a national disgrace.

Cook represented the Isle of Man for the first time at the 2013 Swedish Open, going on to win the gold medal in the −80 kg category.

[17] Competing for Moldova at the 24th Zagreb Open in Croatia, Cook won Gold after beating Luka Horvat 24–7 in the Male -80 kg Final.

This result was closely followed by a dominant display at the 14th French Open in Paris in which Cook once again claimed Gold in the -80 kg male final by beating Maxime Potvin of Canada 19–15.