Best in Show is a 2000 American mockumentary comedy film co-written by Christopher Guest and Eugene Levy and directed by Guest. The film follows five entrants in a prestigious dog show as they travel to and compete at the show, and stars Guest and Levy alongside Jennifer Coolidge, John Michael Higgins, Michael Hitchcock, Jane Lynch, Michael McKean, Catherine O'Hara, and Parker Posey.

Much of the dialogue was improvised. Many of the comic actors were also involved in Guest's other films, including Waiting for Guffman, A Mighty Wind, For Your Consideration, and Mascots. The film's score was composed by C. J. Vanston.