Lage Raho Munna Bhai (pronounced [ləˈɡeː rəˈɦoː mʊnːaːˈbʱaːi] ; translation: Keep Going, Munna Bro) is a 2006 Indian Hindi-language satirical comedy drama film written, edited and directed by Rajkumar Hirani, who also co-wrote the screenplay with Abhijat Joshi, and produced by Vidhu Vinod Chopra under the production banner of Vinod Chopra Films. The film was released worldwide on 1 September 2006 and is the second installment of the Munna Bhai film series after its prequel, Munna Bhai M.B.B.S. (2003), with Sanjay Dutt and Arshad Warsi reprising their roles as Munna Bhai, a gangster in the Mumbai underworld, and his sidekick, Circuit, respectively. Vidya Balan portrays the female lead, replacing Gracy Singh from the original, while several other actors from the prequel, notably Jimmy Sheirgill and Boman Irani, appear in new roles, and Dia Mirza also appears in a small role in the film. In this film, the eponymous lead character begins to see the soul of Mahatma Gandhi, which is portrayed by Dilip Prabhavalkar. Through his interactions with Gandhi, he begins to practice what he refers to as "Gandhigiri" (a neologism for "Gandhism") to help ordinary people solve their problems.

The film received widespread critical acclaim for its direction, story, screenplay, dialogues, performances of the cast, and its social message and themes, and proved to be a major box office success, grossing over ₹1.270 billion (equivalent to ₹4.1 billion or US$51 million in 2023) worldwide and became the third highest-grossing film of the year. At the 54th National Film Awards, Lage Raho Munna Bhai won 4 awards, including Best Popular Film Providing Wholesome Entertainment and Best Supporting Actor (Dilip Prabhavalkar). At the 52nd Filmfare Awards, the film received 12 nominations, including Best Film, Best Director (Hirani) and Best Actor (Dutt), and won 4 awards, including Best Film (Critics) and Best Comedian (Warsi). Lage Raho Munna Bhai also had a number of prominent screenings. It was the first Hindi film to be shown at the United Nations, and was screened at the Tous Les Cinema du Monde section of the 2007 Cannes Film Festival. The film popularized the term Gandhigiri. Vidhu Vinod Chopra submitted the film as an independent entry for the 2007 Academy Award for Best Foreign Film. It was later remade in Telugu as Shankar Dada Zindabad (2007).