The Ballad of Wallis Island is a 2025 British comedy film directed by James Griffiths, produced by Rupert Majendie, and starring Tim Key, Tom Basden, and Carey Mulligan. Basden and Key co-wrote the film's screenplay. The film is based on the 2007 short film The One and Only Herb McGwyer Plays Wallis Island, which Griffiths also directed and Basden and Key also co-wrote.

The film premiered at the Sundance Film Festival on January 25, 2025, followed by a limited theatrical release in the United States on March 28, 2025, by Focus Features, and has received acclaim from critics.