The 2018–19 Indian Super League season was the fifth season of the Indian Super League, one of the top Indian professional football leagues. It was established in 2013. The regular season began on 29 September 2018 and concluded on 17 March 2019. The league took a mid-season break for around one month from 17 December 2018 to early January 2019 due to India's participation in the 2019 AFC Asian Cup.