Arjun Erigaisi is an Indian chess grandmaster, born on 3 September 2003 in Warangal, Telangana. He began playing chess at an academy in nearby Hanamkonda and earned the grandmaster title in 2018 at the age of 14, becoming the 54th grandmaster from India. He first drew international attention with strong results at the Tata Steel tournament in Wijk aan Zee.

Erigaisi won the Indian Championship in 2022. In 2024 he was part of the Indian team that won gold in the open section of the 45th Chess Olympiad in Budapest, won the WR Chess Masters, and became the 16th player in history to pass a FIDE rating of 2800. He won bronze medals at both the World Rapid and World Blitz Championships in 2025.