Kermit the Frog / Rowlf / Dr. Teeth / Waldorf / Swedish Chef / Ernie / Granny / Horse & Carriage Rider / Link Hogthrob / The Newsman / Baby Kermit / Baby Rowlf (voice)
Miss Piggy / Fozzie / Animal / Bert / Cookie Monster / Ocean Breeze Soap Board Member / Sam the Eagle / Baby Piggy / Baby Fozzie / Baby Animal (voice)
Gonzo / Chester the Rat / Bill the Frog / Zoot / Beauregard / Jim the Dog / Dr. Bunsen Honeydew / Baby Gonzo Honeydew / Penguin (voice)
Rizzo the Rat / Gill the Frog / Chicken / College Student in Audience / Dog (voice)
Scooter / Statler / Janice / Beaker / Dog / Baby Scooter (voice)
Camilla / Lew Zealand / Floyd / Bear / Chicken / Crazy Harry / Dog / Dr. Julius Strangepork / Granny / Penguin / Pops (voice)
Jenny
Ronnie Crawford
Pete
Bernard Crawford
Mr. Skeffington
Martin Price / Murray Plotsky
Roller Skater
Kermit's Doctor
Perfume Saleswoman
Cop in Pete's
Liza Minnelli
Customer in Pete's
Leonard Winesop's Receptionist
The Honorable Edward I. Koch (as The Honorable Edward I. Koch)
Leonard Winesop
Vincent Sardi Jr.
Jill the Frog / Chicken (voice)
Yolanda the Rat / Frank the Dog (voice)
Tatooey the Rat / Bear / Dog (voice) (as Brian Muehl)
Masterson the Rat / Beth Bear (voice)
Additional Muppet Performer
Additional Muppet performer (as Michael Earl Davis)
Additional Muppet Performer (as Tim De Haas)
Additional Muppet Performer / College Student in Audience / Bear
College Student
Mr. Price's Secretary (as Cheryl McFadden)
Woman in Price's Office
First Cop
Second Cop
Screaming Woman
Train Conductor
Elevator Passenger
Man in Winesop's Office
Construction Worker
Construction Worker (as Kenneth MacGregor)
Mr. Wrightson
Bingo Caller
Aquacade Announcer
Woman in Bleachers
Man in Bleachers
Maitre D' at Sardi's
Customer at Sardi's
Thief in Central Park
Cop in Central Park
Chauffeur
The Minister (as Dr. Cyril Jenkins)
Woman in Crawford's Office (uncredited)
Additional Muppet Performer (uncredited)
Muppet Performer / Link Hogthrob (uncredited)
Additional Muppet Performer / News Reporter (uncredited)
Roller Skater (uncredited)
College Student (uncredited)
Additional Muppet Performer (voice) (uncredited)
Girl Serving Drinks at Beer Hall (uncredited)
Liza Minnelli's Escort (uncredited)
Customer at Sardi's (uncredited)
Theater Patron (uncredited)
Themselves (uncredited)
Customer at Counter (uncredited)
Customer in Diner (uncredited)
Blonde little girl at gonzo water show (uncredited)
Gonzo (uncredited)
Audience Member (uncredited)
Extra (uncredited)
College audience member (uncredited)