Gangs of Wasseypur is a 2012 Indian Hindi-language two-part epic black comedy crime film produced and directed by Anurag Kashyap, and written by Kashyap and Zeishan Quadri. Centered on the coal mafia (Mafia Raj) of Dhanbad, and the underlying power struggles, politics and vengeance between three crime families, the film has an ensemble cast, with Manoj Bajpai, Nawazuddin Siddiqui, Pankaj Tripathi, Richa Chadda, Jaideep Ahlawat, Huma Qureshi and Tigmanshu Dhulia in the major roles. Its story spans 68 years from 1941 to 2009.

Both parts were originally shot as a single film measuring a total of 321 minutes and screened at the 2012 Cannes Directors' Fortnight, but since no Indian theatre would volunteer to screen a film longer than five hours, it was split into two parts for that market.

Both films received widespread critical acclaim and were commercially successful at the box office. It has gained a large cult following over the years due to its dark humor, experimental soundtrack, and its raw and realistic filmmaking style not done by any Bollywood film before. In 2019, The Guardian listed it 59th on the 100 greatest movies of the 21st century. It is regarded by many as one of the greatest film series of all time.