Nanny McPhee and the Big Bang (released in the United States and Canada as Nanny McPhee Returns) is a 2010 fantasy comedy family film directed by Susanna White, produced by Tim Bevan, Eric Fellner and Lindsay Doran with music by James Newton Howard and co-produced by StudioCanal, Relativity Media, Working Title Films and Three Strange Angels. It is a sequel to the 2005 film Nanny McPhee. It was adapted by Emma Thompson from Christianna Brand‘s Nurse Matilda books. Thompson reprises her role as Nanny McPhee, and the film also stars Maggie Gyllenhaal, Ralph Fiennes, Rhys Ifans, Ewan McGregor, Asa Butterfield and Maggie Smith. The film was theatrically released on August 20, 2010 by Universal Pictures.

The film received positive reviews from critics and it earned $93.2 million on a $35 million budget. It also received a Young Artist Award nomination for Best Performance in a Feature Film. The film was released on DVD and Blu-ray in the UK on 19 June 2010.