Hilda and the Mountain King (marketed as Hilda: The Mountain King) is a 2021 2D-animated adventure fantasy film directed by Andy Coyle and based on the sixth edition of the Hilda graphic novel series by Luke Pearson of the same name, and is a continuation from 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.
Production of Hilda and the Mountain King started in late 2019, and the film was produced by Silvergate Media and Mercury Filmworks. The opening credits were animated by Giant Ant. A trailer for the movie released on December 2, 2021, and was released as a Netflix film on December 30, 2021.