Adulthood (stylised known as AdULTHOOD) is a 2008 British teen crime drama film starring, written and directed by Noel Clarke in his feature film directorial debut. The second installment in the Hood Trilogy, it is a sequel to 2006's Kidulthood. The film also co-stars Adam Deacon, Scarlett Alice Johnson, Femi Oyeniran, Red Madrell, Jacob Anderson, Ben Drew, Nathan Constance, Cornell John, and Danny Dyer. In the film, Sam (Clarke) tries to change his life following a 6-year prison sentence for killing Trife but a new gang led by Jay (Deacon) intend to avenge Trife by killing Sam.

Plans for a sequel came around following the success of Kidulthood. Menhaj Huda, who directed the first film, turned down the opportunity to direct Adulthood, which prompted the studio to hire Clarke, in his directorial debut, to helm the film. Production began in November 2007 in West London.

Adulthood had its world premiere at Leicester Square on 17 June 2008 and was released three days later. The film received generally positive reviews and was a box office success, grossing £1,203,319 during its UK opening weekend, with an overall gross of £6 million, becoming the second-highest grossing British film of 2008.

At the 62nd British Academy Film Awards in 2009, Clarke won the BAFTA Rising Star Award, making him the first black person to accept the award. After starring in the film, Adam Deacon decided to write and star in his own urban film, Anuvahood. The final film of the trilogy, Brotherhood, also by Clarke, was released in 2016.