Zathura: A Space Adventure (also known simply as Zathura) is a 2005 American science fiction action-adventure film directed by Jon Favreau. It is an adaptation of the 2002 children's book Zathura by Chris Van Allsburg, author of the 1981 children's book Jumanji. It is a standalone spin-off of the 1995 film Jumanji and the second installment of the Jumanji franchise. The film stars Josh Hutcherson, Jonah Bobo, Dax Shepard, Kristen Stewart, and Tim Robbins.

The story is about two squabbling brothers, Danny and Walter Budwing (portrayed by Bobo and Hutcherson, respectively) who find a mysterious board game in the basement which transports their house into outer space. Along with their older sister Lisa (Stewart) and an astronaut (Shepard), they try to survive the game so they can return home.

The film was shot in Los Angeles and Culver City, California, and was released on November 11, 2005, in the United States. It received positive reviews from critics but was a box office disappointment, grossing $65.1 million worldwide.