Dan Aykroyd as Sgt. Frank Tree

Ned Beatty as Ward Douglas

John Belushi as Capt. Wild Bill Kelso

Lorraine Gary as Joan Douglas

Murray Hamilton as Claude Crumn

Christopher Lee as Capt. Wolfgang von Kleinschmidt

Tim Matheson as Capt. Loomis Birkhead

Toshirō Mifune as Cmdr. Akiro Mitamura

Warren Oates as Col. 'Madman' Maddox

Robert Stack as Maj. Gen. Joseph W. Stilwell

Treat Williams as Cpl. Chuck 'Stretch' Sitarski

Nancy Allen as Donna Stratton

Lucille Benson as Gas Mama (Eloise)

Jordan Brian as Macey Douglas

John Candy as Pvt. Foley

Elisha Cook Jr. as The Patron (Dexter)

Eddie Deezen as Herbie Kazlminsky

Bobby Di Cicco as Wally Stephens

Dianne Kay as Betty Douglas

Perry Lang as Dennis DeSoto

Patti LuPone as Lydia Hedberg

J. Patrick McNamara as Pvt. DuBois

Frank McRae as Pvt. Ogden Johnson Jones

Steven Mond as Gus Douglas

Slim Pickens as Hollis P. Wood

Wendie Jo Sperber as Maxine Dexheimer

Lionel Stander as Angelo Scioli

Dub Taylor as Mr. Malcomb

Iggie Wolfington as Meyer Mishkin

Christian Brackett-Zika as Stevie Douglas

Joe Flaherty as Raoul Lipschitz

David L. Lander as Joe

Michael McKean as Willy

Susan Backlinie as Polar Bear Woman

E. Hampton Beagle as Phone Man

Deborah Benson as USO Girl

Don Calfa as Telephone Operator

Dave Cameron as Reporter

Vito Carenzo as Vito, Shore Patrol

Mark Carlton as Stilwell Aide

Gary Carlos Cervantes as Zoot Suiter

Paul Cloud as Stilwell Aide

Luis Contreras as Zoot Suiter

Carol Culver as Anderson Sister

Lucinda Dooling as Lucinda

Gray Frederickson as Lt. Bressler

Brian Frishman as USO Goon

Samuel Fuller as Interceptor Commander

Marjorie Gaines as Anderson Sister

Dian Gallup as Twin

Denise Gallup as Twin

Trish Garland as Anderson Sister

Barbara Gannen as Interceptor Assistant

Brad Gorman as USO Nerd

Jerry Hardin as Map Man

Diane Hardin as Interceptor Assistant

Robert Houston as Maddox's Soldier

Audrey Landers as USO Girl

John Landis as Mizerany

Mark Marias as Dept. Store Kid

John McKee as Reporter

Ronnie McMillan as Winowski

Dan McNally as Reporter

Dick Miller as Officer Miller

Akio Mitamura as Ashimoto

Antoinette Molinari as Mrs. Scioli

Walter Olkewicz as Hinshaw

Mickey Rourke as Reese

Whitney Rydbeck as Daffy

Donovan Scott as Kid Sailor

Kerry Sherman as USO Girl

Hiroshi Shimizu as Ito

Geno Silva as Martinez

Rita Taggart as Reporter

Maureen Teefy as USO Girl

Andy Tennant as Babyface

Jack Thibeau as Stilwell Aide

Galen Thompson as Stilwell Aide

Frankie Verroca as USO Nerd

John Voldstad as USO Nerd

Carol Ann Williams as USO Girl

Jenny Williams as USO Girl

James Caan as Sailor in Fight (uncredited)

Penny Marshall as Miss Fitzroy (uncredited)

Denise Cheshire as Swimming Girl (at U-boat periscope)