War Horse is a 2011 war drama film directed and produced by Steven Spielberg, from a screenplay written by Lee Hall and Richard Curtis. It is based on Michael Morpurgo's 1982 novel of the same name and its 2007 stage adaptation. The film features an ensemble cast that includes Peter Mullan, Emily Watson, Niels Arestrup, Jeremy Irvine (in his feature film debut), David Thewlis, Tom Hiddleston and Benedict Cumberbatch. Set before and during World War I, its plot follows Joey, a bay Irish Hunter horse raised by English teenager Albert as he is bought by the British Army, leading him to encounter various people throughout Europe, in the midst of the war and its tragedies.

DreamWorks Pictures acquired the film rights to the novel in December 2009, and Spielberg was announced to direct in May 2010. Having directed several films set during World War II, it was his first to tackle the events of World War I. Shot in England over 63 days, the production used 5,800 extras and 300 horses. Several longtime Spielberg collaborators—including producer Kathleen Kennedy, cinematographer Janusz Kamiński, editor Michael Kahn, production designer Rick Carter and composer John Williams—worked on the film.

Produced by DreamWorks and distributed worldwide by Walt Disney Studios Motion Pictures through the Touchstone Pictures label, War Horse became a box-office success (earning $177 million on a $70 million budget) and was met with positive reviews. The film was named one of the ten best films of 2011 by the American Film Institute and the National Board of Review, and was nominated for six Academy Awards (including Best Picture), two Golden Globes and five BAFTAs.