A Mighty Wind is a 2003 pseudo-documentary about a folk music reunion concert and the three groups that must come together to perform on national television for the first time in years. The film was directed (and co-written) by Christopher Guest. The title alludes to the folk standards "Blowin' in the Wind" and "Wasn't That A Mighty Storm" covered by many singers of the early 1960s. The film was inspired by the 1982 documentary film The Weavers: Wasn't That a Time! about The Weavers 1980 Carnegie Hall reunion concert.

Many actors and actresses return from This Is Spinal Tap, Waiting for Guffman, and Best in Show for this film, including Eugene Levy, Catherine O'Hara, Michael McKean, Harry Shearer, Fred Willard, Bob Balaban, Ed Begley, Jr., Jennifer Coolidge, Paul Dooley, John Michael Higgins, Michael Hitchcock, Rachael Harris, Don Lake, Jane Lynch, Larry Miller, Jim Piddock, Deborah Theaker, and Parker Posey.