Aishwarya Rai Bachchan was offered a role opposite Brad Pitt in Troy. However, she turned it down because it demanded intimate scenes with Brad Pitt
Dilip Kumar rejected the film Lawrence of Arabia
Ronit Roy was offered a role in the Oscar-winning movie Zero Dark Thirty, but he had to turn down the offer because he was dedicated full-time to Student Of The Year
Priyanka Chopra rejected the role of Freida Pinto in the movie Immortal as the dates of the movie was clashing with her Bollywood film 7 Khoon Maaf.
Irrfan Khan rejected Christopher Nolan's film Interstellar. He was offered the role of Matt Damon in the movie
Akshay Kumar rejected a role in Untitled film with Dwayne Johnson
Hrithik Roshan was offered the role of Vicente in The Pink Panther 2, however, he turned it dow due to other important projects with Bollywood directors
Shah Rukh Khan rejected the role played by Anil Kapoor in Slumdog Millionaire
Deepika Padukone rejected mainstream role in Furious 7 starring Vin Diesel and Paul Walker as she was busy shooting for Happy New Year