Dorothy Gladys "Dodie" Smith was an English novelist and playwright. She is best known for writing I Capture the Castle (1948) and the children's novel The Hundred and One Dalmatians (1956). Other works include Dear Octopus (1938) and The Starlight Barking (1967). The Hundred and One Dalmatians was adapted into a 1961 animated film and a 1996 live-action film, both produced by Disney. Her novel I Capture the Castle was adapted into a 2003 film. I Capture the Castle was voted number 82 as "one of the nation's 100 best-loved novels" by the British public as part of the BBC's The Big Read (2003).

I Capture the Castle is the first novel of English author Dodie Smith, written during the Second World War when she and her husband Alec Beesley, an English conscientious objector, moved to California. She longed for home and wrote of a happier time, unspecified in the novel apart from a reference to living in the 1930s. Smith was already an established playwright and later became famous for writing the children's classic The Hundred and One Dalmatians.