Paul Le Mat as John Milner

Cindy Williams as Laurie Bolander

Candy Clark as Debbie Dunham

Charles Martin Smith as Terry "Terry the Toad" Fields

Mackenzie Phillips as Carol / Rainbow

Bo Hopkins as Little Joe

Ron Howard as Steve Bolander

Will Seltzer as Andy Henderson

Anna Bjorn as Eva

Scott Glenn as Newt

Mary Kay Place as Teensa

John Lansing as Lance

Ken Place as Beckwith

James Houghton as Sinclair

Richard Bradford as Major Creech

Manuel Padilla Jr. as Carlos

Ralph Wilcox as Felix

Doug Sahm as Bobbie

Carol Ann Williams as Vikki

John Brent as Ralph

Monica Tenner as Moonflower

Tom Ruben as Eric

Country Joe McDonald as Country Joe and the Fish

Barry Melton as Country Joe and the Fish

Robert Hogins as Country Joe and the Fish

Robert Flurie as Country Joe and the Fish

Peter Albin as Country Joe and the Fish

Harold Aceves as Country Joe and the Fish

Wolfman Jack as Himself

Rosanna Arquette as Girl in Commune

Tom Baker as Cop #1

Eric Barnes as Sergeant Dutton

Becky Bedoy as Girl in Bus

Buzz Borelli as The Freak

Ben Bottoms as Perry

Patrick Burns as Musician #1

Tim Burrus as Slick Eddie

George Cantero as Guard

Chet Carter as Race Starter

Dion M. Chesse as Delivery Man

Gil Christner as Ed

Don Coughlin as Cop #2

Mark Courtney as Kevin Bolander

Michael Courtney as Teddy Bolander

Denny Delk as Police Sergeant

Frankie Di as Trophy Girl

Steve Evans as Race Announcer

Nancy Fish as Police Matron

Rocky Flintermann as The Neighbor

Michael Frost as Musician #2

Jon Gries as Ron

Paul G. Hensler as Lieutenant

Julie Anna Hicks as Child in Commune

Robert Hirschfeld as Delivery Man

Erik Holland as Ole

Jay Jacobus as Congressman

Naomi Judd as Girl in Bus

Leslie Gay Leace as Girl in Bus

Delroy Lindo as Army Sergeant

Dwight Reber as Pilot

Sandra Rider as Girl in Commune

Kevin Rodney Sullivan as Lieutenant

Morgan Upton as Mr. Hunt

John Vella as Big Guy

Dan Woodworth as Student Leader

Clay Wright as Pilot

Darrell Mapson as Draft Protestor (uncredited)

Harrison Ford as Officer Bob Falfa (uncredited)