Will Smith
Capt. Steven Hiller
Bill Pullman
President Thomas J. Whitmore
Jeff Goldblum
David Levinson
Mary McDonnell
Marilyn Whitmore
Judd Hirsch
Julius Levinson
Robert Loggia
General William Grey
Margaret Colin
Constance Spano
James Rebhorn
Albert Nimzicki
Harvey Fierstein
Marty Gilbert
Adam Baldwin
Major Mitchell
Brent Spiner
Dr. Brackish Okun
Vivica A. Fox
Jasmine Dubrow
Mae Whitman
Patricia Whitmore
Bill Smitrovich
Captain Watson
Harry Connick Jr.
Capt. Jimmy Wilder
Leland Orser
Techy / Med Asst #1
David Pressman
Whitmore's Aide
Vivian Palermo
Tech / Med Asst
Raphael Sbarge
Commander / Tech
Bobby Hosea
Commanding Officer
Dan Lauria
Commanding Officer
Steve Giannelli
Radar Tech
Carlos Lacámara
Radar Operator
John Bennett Perry
Secret Serviceman
Troy Willis
Secret Serviceman
Wayne Wilderson
Area 51 Technician
Jana Marie Hupp
SETI Tech Three
Matt Pashkow
Second Officer
Robert Pine
Chief of Staff
Marisa Johnston
Co-Worker #2
Michael Winther
Co-Worker #3
Warren Dexter Beatty
Co-Worker #4
Michael Vacca
Lt. Peterson
David Channell
Secret Service Agent
Greg Collins
Military Aide
Derek Webster
Sky Crane Pilot
Levan Uchaneishvili
Russian Pilot
Kristof Konrad
Russian Pilot
Kevin Sifuentes
Tank Commander
Barry Del Sherman
Street Preacher
Lyman Ward
Secret Service Guy
Barbara Beck
Monica Soloway
Peter J. Lucas
Russian Reporter
Yelena Danova
Russian Newscaster
Johnny Kim
Korean Newscaster
Vanessa J. Wells
Newscaster
Jessika Cardinahl
German Video Newscaster
Gary W. Cruz
Video Newscaster
Ron Pitts
Video Newscaster
Wendy L. Walsh
Video Newscaster
Christine Devine
Video Newscaster
Mark Thompson
Video Newscaster
Ernie Anastos
Rex Black / NY Newscaster
Kevin Cooney
Atlantic Air CINC
Nelson Mashita
Japanese Tech
Thomas F. Duffy
Lieutenant
Eric Michael Zee
Northridge Field Reporter
Malcolm Danare
Intellectual on Roof
Arthur Brooks
Trucker on Roof
James J. Joyce
Master C. P. O.
Joyce Cohen
Kim Peters (Reporter)
Julie Moran
Entertainment Tonight Reporter
Robin Groth
Flagstaff News Anchor
Richard Pachorek
LAPD Helicopter Pilot
Gary A. Hecker
Alien Vocal Effects (voice)
Frank Welker
Special Vocal Effects (voice)