The IIFA Award for Best Actor recognizes leading male actor who has delivered an outstanding performance in a leading role. The recipient is chosen by viewers and the winner is announced at the ceremony.
Sanjay Dutt, Hrithik Roshan and Shah Rukh Khan are the only actors to be nominated twice for the same role. Sanjay Dutt was nominated in 2004 and 2007 for his portrayal of Munna Bhai in Munnabhai MBBS and Lage Raho Munnabhai. Hrithik Roshan achieved this feat twice in the Krrish franchise; he was nominated for his role as Krishna Mehra for Krrish in 2007 and 2014 for Krrish 3 (he won in 2007), and for his role as Rohit Mehra in 2004 for Koi... Mil Gaya and 2014 for Krrish 3 (he won in 2004). Shah Rukh Khan was nominated in 2007 and 2012 for his portrayal of the titular character in Don and Don 2 respectively.
Hrithik Roshan and Shahid Kapoor hold a unique record of receiving nominations in this category in all 3 decades (2000s, 2010s, 2020s). Hrithik won in 2000s and Shahid triumphed in 2010s and 2020s.