Bruce Willis

(Harry S. Stamper)

Billy Bob Thornton

(Dan Truman, NASA Administrator)

Liv Tyler

(Grace Stamper)

Ben Affleck

(A.J. Frost)

Will Patton

(Charles "Chick" Chapple)

Peter Stormare

(Lev Andropov, Russian Cosmonaut)

Keith David

(Lt. General Kimsey)

Steve Buscemi

(Rockhound)

Owen Wilson

(Oscar Choi, Geologist)

William Fichtner

(Colonel William Sharp, Shuttle Freedom Pilot)

Jessica Steen

(Jennifer Watts, Shuttle Freedom Co-Pilot)

Jason Isaacs

(Dr. Ronald Quincy, Research)

Ken Campbell

(Max Lennert)

Grayson McCouch

(Gruber)

Clark Brolly

(Freddy Noonan)

Marshall Teague

(Colonel Davis)

Chris Ellis

(Walter Clark)

Eddie Griffin

(Little Guy)

Michael Clarke Duncan

(Jayotis "Bear" Kurleenbear)

John Mahon

(Karl)

Grace Zabriskie

(Dottie)

Udo Kier

(Psychologist)

Seiko Matsuda

(Asian Tourist)

Lawrence Tierney

(Hollis Vernon Grap Stamper)