Hilda and the Mountain King is a 2021 animated adventure fantasy film directed by Andy Coyle and written by Luke Pearson. It is based on the sixth edition of the Hilda graphic novel series of the same name by Pearson and is a continuation of the second-season finale of the Hilda animated series. The film features the voices of Bella Ramsey, Ameerah Falzon-Ojo, Oliver Nelson, Daisy Haggard, Rasmus Hardiker, John Hopkins and Lucy Montgomery.

Luke Pearson is a British illustrator, cartoonist, and comic book writer best known for the Hilda series of comics for Nobrow Press, and Hilda, the Netflix series based on the comics. He has also storyboarded episodes of the Cartoon Network series Adventure Time, during its fifth and seventh seasons.