Chirukandath Manoj Arjun Vishnuvardhan (born 21 August 1990), generally known as Arjun Vishnuvardhan, is an Indian chess player who is an International Master in the United States of America. At his 15 years of age, in May 2006, he became the National Game-60 Chess Champion of the entire United States, by beating International Master Edward W. Formanek. This victory over the top International Master made Arjun to become the youngest National Game 60 Champion of the United States. One month before his 17th birthday, Arjun became the youngest ever Keralite to become an International Master.
Arjun was born in Kerala, India and started playing chess when he was 8 years old. He was the State Champion for Under-18 years and Under-9 years. He posted the National record in India in the year of 2000, by becoming the youngest International FIDE rated player of the country.
In 2001, he won the British Junior Under-11 Championship held at Scarborough, United Kingdom. In 2002, Arjun won the Under-16 Youth Championship from Middle East. When he was 11, he beat Uzbekistani Grandmaster Saidali Iuldachev in a simultaneous chess exhibition held in the United Arab Emirates, thus becoming the youngest ever Indian chess player to defeat a grandmaster in a chess simultaneous exhibition held outside India.
After a break of one year from chess, he successfully came back to the International chess circuit in 2004. He tied for the North American & Caribbean Youth Championship title in the same year. In 2005, he became the Youth Chess Champion and the triple gold winner in the Biel Chess Festival, held at Switzerland. A few months later, he won another Youth title from Spain. From 2005 to 2007, he drew and defeated many International Masters and Grandmasters in various blitz, rapid and regular chess championships held in the United States, Switzerland, Spain, and elsewhere. He has an International Fide elo of 2394 on the 1 October 2007 World Chess Federation's rating list. He won 18 International chess medals at 16.
Arjun has played simultaneous blindfold chess since his 11 years of age.