The 2011 Indian Premier League season, abbreviated as IPL 4 or the IPL 2011, was the fourth season of the Indian Premier League, the top Twenty20 cricket league in India. The tournament was hosted in India and the opening and closing ceremonies were held in M. A. Chidambaram Stadium, Chennai, the home venue of the reigning champions Chennai Super Kings. The season ran from 8 April to 28 May 2011. This season the number of teams in the league went from eight to ten with the additions of the Pune Warriors India and the Kochi Tuskers Kerala.

The Indian Premier League (IPL), also known as the TATA IPL for sponsorship reasons, is a men's Twenty20 (T20) cricket league held annually in India. Founded by the BCCI in 2007, the league features ten city-based franchise teams. The IPL usually takes place during the summer, between March and May each year. It has an exclusive window in the ICC Future Tours Programme, resulting in fewer international cricket tours occurring during the IPL seasons.