The Indian Super League （ISL） is the top professional football league in India, established in 2013. When discussing the most championships in ISL history, ATK Mohun Bagan （formerly known as ATK） holds the record with three championship titles.
ATK won the ISL championship in 2014 （inaugural season）, 2016, and 2019-20 season. After merging with Mohun Bagan in 2020, the club continued its successful run in the league. Other successful clubs include Chennaiyin FC with two championships （2015 and 2017-18） and Mumbai City FC with one championship （2020-21 season）.
The ISL has grown significantly in popularity across India, featuring both domestic and international players. The league follows a franchise system with teams representing major Indian cities, contributing to the development of football talent and fan engagement throughout the country. |
