Caroll Spinney as Big Bird / Oscar the Grouch / Bruno the Trashman (voice)

Jim Henson as Kermit the Frog / Ernie (voice)

Frank Oz as Cookie Monster / Bert / Grover / Additional Muppets (voice)

Richard Hunt as Gladys the Cow / Feathered Friends Owl / Additional Muppets / Grouches (voice)

Kathryn Mullen as Feathered Friends Magistrate / Grouch Diner Patron / Little Girl / Additional Muppets (voice)

Jerry Nelson as Count von Count / Herry Monster / Additional Muppets (voice)

Paul Bartel as Grouch Cook

Sandra Bernhard as Grouch Waitress

Waylon Jennings as Truck Driver

Laraine Newman as Mommy Dodo (voice)

Eddie Deezen as Donnie Dodo (voice)

Sally Kellerman as Miss Finch (voice)

Cathy Silvers as Marie Dodo (voice)

John Candy as State Trooper

Chevy Chase as Newscaster

Joe Flaherty as Sid Sleaze

Dave Thomas as Sam Sleaze

Brian Hohlfeld as Daddy Dodo (voice)

Linda Bove as Linda

Emilio Delgado as Luis

Loretta Long as Susan

Sonia Manzano as Maria

Bob McGrath as Bob

Roscoe Orman as Gordon

Alaina Reed Hall as Olivia

Kermit Love as Willy

Alyson Court as Ruthie

Richard Campbell as Boy with Apple

Liston Bates as Rescue Boy

Tawny Richard as Rescue Girl

Adrian McCalla as Kid at Map

Tanya Marie Cook as Tanya

Shawna Stoll as Airline Announcer

Martin P. Robinson as Mr. Snuffleupagus / Telly Monster / Board of Birds / Grouch Diner Patron (voice)

Bryant Young as Mr. Snuffleupagus (Back Half)

Fred Garver as Barkley (voice)

Cheryl Wagner as Miss Finch

Patricia Leeper as Mommy Dodo / Board of Birds (voice)

Gord Robertson as Daddy Dodo

Jeff Weiser as Donnie Dodo

Shari Weiser as Marie Dodo

Tim Gosley as Honker / Board of Birds

Noel MacNeal as Board of Birds (voice)

Bob Stutt as Board of Birds (voice)

Nikki Tilroe as Board of Birds (voice)

Lee Armstrong as Board of Birds (voice)

Rob Mills as Board of Birds (voice)

John Pattison as Board of Birds (voice)

Benjamin Barrett as Floyd