Debbie Dunham
Little Joe
Steve Bolander
John Milner
Carol / Rainbow
Terry the Toad
Laurie Bolander
Eva
Major Creech
Ralph
Country Joe and the Fish
Country Joe and the Fish (as Barry 'the Fish' Melton)
Newt
Sinclair
Lance
Carlos (as Manuel Padilla)
Beckwith
Teensa
Eric
Bobbie
Andy Henderson
Moonflower
Felix
Vikki (as Carol-Ann Williams)
Wolfman Jack
Girl in Commune
Cop #1
Sergeant Dutton
Girl in Bus
The Freak
Perry
Musician #1
Slick Eddie
Guard
Race Starter
Delivery Man (as Dion Chessé)
Ed
Cop #2
Kevin Bolander
Teddy Bolander
Police Sergeant
Trophy Girl
Race Announcer
Police Matron (as Nancy G. Fish)
The Neighbor
Musician #2
Ron (as Jonathan Gries)
Lieutenant (as Paul Hensler)
Child in Commune
Delivery Man (as Robert E. Hirschfeld)
Ole
Congressman
Army Sergeant
Pilot
Lieutenant (as Kevin Sullivan)
Mr. Hunt
Big Guy
Student Leader
Safety Safari (uncredited)
Officer Bob Falfa (uncredited)
Draft Protestor (uncredited)
Lance's Scream / Vietnam Football Players (archive sound) (uncredited)