Children of Men is a 2006 dystopian science fiction film co-written and directed by Alfonso Cuarón. It was loosely adapted from P. D. James's 1992 novel of the same name by Cuarón and Timothy J. Sexton with help from David Arata, Mark Fergus and Hawk Ostby. It stars Clive Owen, Julianne Moore, Claire-Hope Ashitey, Chiwetel Ejiofor and Michael Caine.

Set in the United Kingdom of 2027, the film explores a grim world in which two decades of global human infertility have left humanity with less than a century to survive. Societal collapse, terrorism, and environmental destruction accompany the impending extinction. Meanwhile, the United Kingdom—perhaps the last functioning government—persecutes a seemingly endless wave of illegal immigrant refugees seeking sanctuary. In the midst of this chaos, Theo Faron (Clive Owen) must find safe transit for Kee (Claire-Hope Ashitey), a pregnant African refugee.

The film was released on 22 September 2006, in the UK, 19 October 2006, in Australia and on 25 December 2006, in the U.S., critics noting the relationship between the Christmas opening and the film's themes of hope, redemption, and faith. Described as a companion piece to Cuarón's Y tu mamá también (2001), both films examine contemporary social and political issues through the epic journey of the road film.

Children of Men was recognised for its achievements in screenwriting, cinematography, art direction, and innovative single-shot action sequences, receiving three Academy Award nominations and winning two BAFTA awards.