The event will be held April 16-25.
"We are taking 'Paa' there...Its a pity that this is the only film that shall have me at this festival and because of my intricate make-up, people may never acknowledge my presence, " Amitabh posted on his blog.
In the film, Amitabh plays a 13-year-old child suffering from progeria, a rare genetic disorder that accelerates ageing. His father in the film is his real life son Abhishek Bachchan. The film also stars actress Vidya Balan.