Arun Karthik is an Indian cricketer known for his contributions as a righthanded batsman and occasional wicketkeeper. He gained prominence through his performances in domestic cricket, representing various teams including Tamil Nadu, Assam, and Rajasthan. Karthik's career highlights include notable performances in the Indian Premier League (IPL), where he played for teams like Royal Challengers Bangalore and Kings XI Punjab (now Punjab Kings). He is particularly remembered for a lastball six he hit for Royal Challengers Bangalore in the 2011 Champions League Twenty20 final, securing a dramatic victory for his team. This moment significantly boosted his profile and cemented his reputation as a clutch player.

Beyond the IPL, Karthik has consistently participated in domestic tournaments such as the Ranji Trophy and the Vijay Hazare Trophy, contributing to his team's efforts with his batting prowess. His adaptability across different formats of the game has made him a valuable asset to the teams he has represented. While he may not have achieved widespread international recognition, Arun Karthik remains a recognized figure in Indian domestic cricket, admired for his skills and his ability to perform under pressure, as demonstrated by his memorable innings in the Champions League Twenty20 final. His career reflects a journey of dedication and perseverance in the competitive landscape of Indian cricket.