Bruce Willis as Harry S. Stamper

Billy Bob Thornton as Dan Truman

Ben Affleck as A.J. Frost

Liv Tyler as Grace Stamper

Will Patton as Chick

Steve Buscemi as Rockhound

William Fichtner as Colonel Willie Sharp

Owen Wilson as Oscar

Michael Clarke Duncan as Bear

Peter Stormare as Lev Andropov

Ken Hudson Campbell as Max

Jessica Steen as Co-Pilot Jennifer Watts

Keith David as General Kimsey

Chris Ellis as Flight Director Clark

Jason Isaacs as Ronald Quincy

Grayson McCouch as Gruber

Clark Heathcliffe Brolly as Noonan

Marshall R. Teague as Colonel Davis

Anthony Guidera as Co-Pilot Tucker

Greg Collins as Halsey

J. Patrick McCormack as General Boffer

Ian Quinn as Astronaut Pete Shelby

Christopher J. Worret as Operator #1

Adam C. Smith as Operator #2

John Mahon as Karl

Grace Zabriskie as Dottie

K.C. Leomiti as Samoan

Eddie Griffin as Bike Messenger

Deborah Nishimura as Client #1

Albert Wong as Client #2

Jim Ishida as Client #3

Stanley Anderson as President

James Harper as Admiral Kelso

Ellen Cleghorne as Helga the Nurse

Udo Kier as Psychologist

John Aylward as Dr. Banks

Mark Curry as Stu the Cabbie

Seiko Matsuda as Asian Tourist - Female

Harry Humphries as Chuck Jr.

Dyllan Christopher as Tommy

Judith Hoag as Denise

Sage Allen as Max's Mom

Steven Ford as Nuke Tech

Christian Clemenson as Droning Guy

Andy Ryan as Greenpeace Guy

Duke Valenti as Roughneck #1

Michael Taliferro as Roughneck #2

Billy Devlin as Roughneck #3

Kathleen Matthews as Newscaster #2

J.C. Hayward as Newscaster #3

Andrew Glassman as Newscaster #4

Shawnee Smith as Redhead

Dwight Hicks as FBI Agent #1

Odile Corso as Geo Tech #1

Vic Manni as Loanshark

Jim Maniaci as Biker Customer

Layla Roberts as Molly Mounds

Joe Allen as Kennedy Launch

Bodhi Elfman as Math Guy

Alexander Johnson as Newscaster

Kathy Neff as Reporter #1

Victor Vinson as Sector Director

Joseph Patrick Kelly as Marine #1

Peter White as Secretary of Defense

Rudy Mettia as G-Man

Frank Van Keeken as NASA Planner #1

Frederick Weller as NASA Tech

Jeff Austin as NASA Tech

Googy Gress as NASA Tech

Matt Malloy as NASA Tech

H. Richard Greene as NASA Tech

Brian Brophy as NASA Tech

Peter Murnik as NASA Tech

Brian Hayes Currie as NASA Tech

Andy Milder as NASA Tech

Michael Kaplan as NASA Tech

Patrick Richwood as Dr. Nerd

Brian Mulligan as Dr. Nerd

John H. Johnson as Pad Director

Charles Stewart as Vacuum Chamber Tech

Scarlet Forge as Young Grace

Michael Tuck as American Newscaster

Patrick Lander as British Newscaster

Anne Varèze as French Newscaster

Fritz Mashimo as Japanese Newscaster

Dina Morrone as Italian Newscaster

Ruben Olague as Spanish Newscaster

Wolfgang Muser as German Newscaster

Jim Fitzpatrick as NORAD Technician

Franky as Dog / Little Richard

Charlton Heston as Narration (voice)

Michael Bay as NASA Scientist (uncredited)

Lawrence Tierney as Eddie 'Gramp' Stamper (uncredited)

Mark Boone Junior as New Yorker (uncredited)