The Indian Premier League (IPL) is one of the most popular cricket leagues in the world, and each team has a significant following. It is difficult to determine which team has the most fans as there is no official data available on this matter.
However, based on various surveys and social media statistics, Mumbai Indians (MI) is considered to have the largest fan base among all the IPL teams. Chennai Super Kings (CSK) and Kolkata Knight Riders (KKR) also have a massive fan following.
But it's important to note that the popularity of IPL teams can vary based on various factors such as team performance, player popularity, and regional support.