Gritakumar E. Chitty (14 June 1939 – 6 January 2022) was a Sri Lankan jurist and career diplomat at the United Nations. He was the founding Registrar of the International Tribunal for the Law of the Sea. After retiring from the United Nations and International Tribunal for the Law of the Sea, Chitty worked for the Government of Sri Lanka as a member of the National Ocean Affairs Commission, serving as its Chairman prior to 2017.