Halla Bol 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.

Rajkumar Santoshi is an Indian film director, producer and screenwriter of Hindi films. A recipient of several accolades including three National Film Awards and six Filmfare Awards, he made his directorial debut with the action drama Ghayal (1990), starring Sunny Deol, Meenakshi Sheshadri and Amrish Puri. The film emerged as a major critical and commercial success, making Santoshi a household name in Hindi cinema. The film won also him the National Film Award for Best Popular Film Providing Wholesome Entertainment as well as his first Filmfare Award for Best Director.