Christopher Guest character Corky St. Clair
Eugene Levy character Dr. Allan Pearl
Fred Willard character Ron Albertson
Catherine O'Hara character Sheila Albertson
Michael Hitchcock character Steve Stark - Councilman
Larry Miller character Glenn Welsch - Mayor
Parker Posey character Libby Mae Brown
Bob Balaban character Lloyd Miller
Don Lake character Phil Burgess - Blaine Historian
David Cross character UFO Expert
Paul Dooley character UFO Abductee
Lewis Arquette character Clifford Wooley
Matt Keeslar character Johnny Savage
Brian Doyle-Murray character Red Savage
Paul Benedict character Not Guffman
Deborah Theaker character Gwen Fabin-Blunt - Councilwoman
Margaret Bowman character Costume designer
Scott Williamson character Tucker Livingston - Councilman
Linda Kash character Mrs. Allan Pearl
James McQueen character Singing Auditioner
Turk Pipkin character Ping Pong Ball Juggler
Jerry Turman character Raging Bull Auditioner
Miriam Flynn character Costume Dresser
Jill Parker-Jones character Stage Manager
Jean Fuller character Blaine Community Orchestra - Piano
Paul Robertson character Blaine Community Orchestra - Violin
Richard Macdowell character Blaine Community Orchestra - Clarinet
Johnny Reno character Blaine Community Orchestra - Saxophone
Tracy Rosenkrans character Blaine Community Orchestra - Bass
CJ Vanston character Blaine Community Orchestra - Trumpet, Timpani, Glockenspiel
Tony Edwards character Blaine Community Orchestra - Drums, Percussion
Lou Christie character Lightning Strikes Auditioner (uncredited)
James Douglas character Theater Attendant (uncredited)
Daniel Fahey character Dental Patient (uncredited)
Shane Felux character Dairy Queen Worker / Crowd (uncredited)
Joseph T. Garrity character TV Commercial Director (uncredited)
Kathy Lamkin character Beautiful Dreamer Auditioner (uncredited)
Bob Odenkirk character Caped Man at Auditions (uncredited)