Halla Bol (Raise Your Voice) is a 2008 Indian Hindi-language social action drama film written and directed by Rajkumar Santoshi. Halla Bol stars Ajay Devgn and Vidya Balan in pivotal roles and a number of celebrities from the Hindi and other film industries appear as themselves. Produced by Samee Siddiqui, the film's score and soundtrack was composed by Sukhwinder Singh, while Natarajan Subramaniam and Steven Bernard were the cinematographer and editor respectively. It was released on 11 January 2008. The film was remade with an adapted story in Bengali in 2010 named Pratidwandi.

The film touches upon the Jessica Lall murder case, Aamir Khan's involvement with the Narmada Bachao Andolan, the Right to Information Act, and public participation in fighting corruption. It also references the theatre group Jan Natya Manch, whose leader, theatre activist Safdar Hashmi, was killed by political rivals while performing a street play by the same name, Halla Bol!, in 1989.