Paa (transl. Father) is a 2009 Indian Hindi-language comedy-drama film directed by R. Balki, starring Amitabh Bachchan, Abhishek Bachchan, and Vidya Balan. Jaya Bachchan makes a cameo appearance in the opening credits of the film as a narrator. The film is inspired by the 1996 Hollywood film Jack as per some reports and is based on the relationship of a boy with a rare genetic condition known as progeria and his parents. Amitabh Bachchan and Abhishek Bachchan, in real life, are father and son respectively, but in Paa, they played opposite roles. The film was released worldwide on 4 December 2009. Veteran composer Ilaiyaraaja scored the music. The film was critically acclaimed in India and fared well at the box office. Despite a warm reception from Indian film critics, the film received mixed reviews from overseas film critics, according to the websites Metacritic and Rotten Tomatoes.

Amitabh Bachchan received his third National Film Award for Best Actor at the 57th National Film Awards for his performance and his fifth Filmfare Award for Best Actor and Vidya Balan got her first Filmfare Award for Best Actress.