Halla Bol (English: Raise Your Voice) is a Hindi film released on 11 January 2008, and directed by Rajkumar Santoshi, whose earlier films include The Legend of Bhagat Singh (2002) and Khakee (2004). Halla Bol stars Ajay Devgan and Vidya Balan in pivotal roles and a number of famous celebrities from the Hindi Film Industry appear as themselves. Produced by Samee Siddiqui, the film's score and soundtrack was composed by Sukhwinder Singh, whilst Nataraja Subramanian and Steven Bernard are the cinematographer and editor respectively.

The film touches upon many issues that have come into the public eye in India lately, such as the Jessica Lall murder case, Aamir Khan's involvement with the Narmada Bachao Andolan, the Right to Information Act, public participation in fighting corruption. It also references 'Jan Natya Manch', whose leader, the theater activist, Safdar Hashmi was killed by political rivals while performing a street play by the same name, Halla Bol! in 1989.

Ashfaque (Ajay Devgn) is a small town boy aspiring to be a film star in the Hindi film industry. He joins a street theatre group run by a reformed dacoit Sidhu (Pankaj Kapoor) who uses street theatre as a medium to bring about an awakening in the masses. Ashfaque struggles to give a creative vent to the actor in him in order to realize his dreams. Ashfaque's determined struggle pays off and he gets a break in films. He gets a new screen name - Sameer Khan. With the passage of time, he moves up the success ladder in a very short time.