Christopher Guest as Corky St. Clair

Eugene Levy as Dr. Allan Pearl

Fred Willard as Ron Albertson

Catherine O'Hara as Sheila Albertson

Michael Hitchcock as Steve Stark - Councilman

Larry Miller as Glenn Welsch - Mayor

Parker Posey as Libby Mae Brown

Bob Balaban as Lloyd Miller

Don Lake as Phil Burgess - Blaine Historian

David Cross as UFO Expert

Paul Dooley as UFO Abductee

Lewis Arquette as Clifford Wooley

Matt Keeslar as Johnny Savage

Brian Doyle-Murray as Red Savage

Paul Benedict as Not Guffman

Deborah Theaker as Gwen Fabin-Blunt - Councilwoman

Margaret Bowman as Costume designer

Scott Williamson as Tucker Livingston - Councilman

Linda Kash as Mrs. Allan Pearl

James McQueen as Singing Auditioner

Turk Pipkin as Ping Pong Ball Juggler

Jerry Turman as Raging Bull Auditioner

Miriam Flynn as Costume Dresser

Jill Parker-Jones as Stage Manager

Jean Fuller as Blaine Community Orchestra - Piano

Paul Robertson as Blaine Community Orchestra - Violin

Richard Macdowell as Blaine Community Orchestra - Clarinet

Johnny Reno as Blaine Community Orchestra - Saxophone

Tracy Rosenkrans as Blaine Community Orchestra - Bass

CJ Vanston as Blaine Community Orchestra - Trumpet, Timpani, Glockenspiel

Tony Edwards as Blaine Community Orchestra - Drums, Percussion

Lou Christie as Lightning Strikes Auditioner (uncredited)

James Douglas as Theater Attendant (uncredited)

Daniel Fahey as Dental Patient (uncredited)

Shane Felux as Dairy Queen Worker / Crowd (uncredited)

Joseph T. Garrity as TV Commercial Director (uncredited)

Kathy Lamkin as Beautiful Dreamer Auditioner (uncredited)

Bob Odenkirk as Caped Man at Auditions (uncredited)