The IIFA Best Dialogue is chosen by the viewers and the winner is announced at the ceremony.
The winners are listed below:-
| Year | Winner | Film |
|---|---|---|
| 2010 | Rajkumar Hirani, Abhijat Joshi | 3 Idiots [1] |
| 2009 | Manu Rishi | Oye Lucky! Lucky Oye! |
| 2008 | Imtiaz Ali | Jab We Met[2] |
| 2007 | Rajkumar Hirani and Abhijat Joshi | Lage Raho Munna Bhai [3] |