21 Jump Street is a 2012 American buddy cop action comedy film directed by Phil Lord and Christopher Miller in their live action directorial debuts and written by Jonah Hill and Michael Bacall. The film stars Hill and Channing Tatum in the lead roles, alongside Brie Larson, Dave Franco, Rob Riggle and Ice Cube. It is an adaptation of the 1987–1991 television series of the same name by Stephen J. Cannell and Patrick Hasburgh. In the film, Schmidt and Jenko are police officers who are forced to relive high school when they are assigned on an undercover mission to pose as high school students in order to prevent the outbreak of a new synthetic drug and arrest its supplier.

21 Jump Street premiered in SXSW festival on March 12, 2012 and was theatrically released in the United States on March 16, by Columbia Pictures and Metro-Goldwyn-Mayer (MGM). It received positive reviews from critics and grossed $201 million worldwide. A sequel, titled 22 Jump Street, was released on June 13, 2014, and in 2015 a female-led spin-off was in development with main stars cast in 2018 and the first draft completed in 2020.