The Loud House Movie is a 2021 American animated musical comedy film based on and featuring characters from the Nickelodeon series The Loud House. Produced by Nickelodeon Movies, it was directed by Dave Needham in his directorial debut, from a screenplay by Kevin Sullivan and Chris Viscardi, and starring the voices of David Tennant, Michelle Gomez, Katy Townsend, and the regular voice cast of the series; consisting of Asher Bishop, Jill Talley, Brian Stepanek, Catherine Taber, Liliana Mumy, Nika Futterman, Cristina Pucelli, Jessica DiCicco, Grey Griffin, Lara Jill Miller, and Andre Robinson, who reprise their respective roles. The first film in the franchise, set between the fourth and fifth seasons of The Loud House, it tells the story of the Louds going to Scotland, where they learn that they are descendants from royalty and own a castle, while contending with an evil plot.

The film was originally going to be theatrically released in 2020 by Paramount Pictures. Instead, the film had a digital release on Netflix on August 20, 2021. It was met with mixed to positive reviews from critics, praising the songs, heartwarming messages, and loyalty to the series, but criticizing the plot and screenplay.