Jim Henson as Kermit the Frog / Rowlf the Dog / Dr. Teeth / Swedish Chef / Waldorf / Ernie / Self

Frank Oz as Miss Piggy / Fozzy Bear / Animal / Sam the Eagle / Bert / Grover / Cookie Monster

Dave Goelz as Gonzo / Dr. Bunsen Honeydew / Zoot / Beauregard / Boober Fraggle

Jerry Nelson as Robin the Frog / Camilla the Chicken / Floyd Pepper / Lew Zealand / Pops / The Count / Gobo Fraggle / Herry Monster

Richard Hunt as Scooter / Janice / Statler / Beaker / Gladys the Cow / Two-Headed Monster / Snowman (voice)

Kathryn Mullen as Mokey Fraggle (voice)

Steve Whitmire as Turkey / Rizzo the Rat / Wembley Fraggle / Sprocket the Dog / Lips (voice)

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

Karen Prell as Red Fraggle / Maureen the Mink (voice)

David Rudman as Miss Piggy's Photographer (voice)

Gerard Parkes as Doc

Terry Angus as Additional Muppet Performer (uncredited)

Debra Spinney as Additional Muppet Performer (uncredited)

Fred Stinson as Additional Muppet Performer (uncredited)

Bob Stutt as Additional Muppet Performer (uncredited)