The House with a Clock in Its Walls is a 2018 American dark fantasy comedy film directed by Eli Roth, based on the 1973 book by John Bellairs. The movie stars Jack Black, Cate Blanchett, and Owen Vaccaro, it follows a young boy, Lewis, who is sent to live with his uncle, Jonathan, in a creaky, old house where he soon learns it was previously inhabited by a villainous warlock. Universal Pictures released the film in the United States on September 21, 2018.

It was a box office success, grossing over $131 million worldwide and received mostly positive reviews from critics who largely praised the cast, but said the film did not fully live up to its potential.