28 Weeks Later is a 2007 post-apocalyptic horror film directed by Juan Carlos Fresnadillo, who co-wrote it with Rowan Joffé, Enrique López Lavigne and Jesus Olmo. The standalone sequel to the 2002 film 28 Days Later, it stars Robert Carlyle, Rose Byrne, Jeremy Renner, Harold Perrineau, Catherine McCormack, Mackintosh Muggleton, Imogen Poots, and Idris Elba. It is set after the events of the first film, depicting the efforts of NATO military forces to salvage a safe zone in London, the consequence of two young siblings breaking protocol to find a photograph of their mother, and the resulting reintroduction of the Rage Virus into the safe zone.

Juan Carlos Fresnadillo is a Spanish film director, script writer, and producer. He directed Intacto and 28 Weeks Later, the sequel to Danny Boyle's 28 Days Later. His film Esposados was nominated for the Academy Award for Best Live Action Short Film in 1996.