Will Smith character Capt. Steven Hiller
Bill Pullman character President Thomas J. Whitmore
Jeff Goldblum character David Levinson
Mary McDonnell character Marilyn Whitmore
Judd Hirsch character Julius Levinson
Robert Loggia character General William Grey
Randy Quaid character Russell Casse
Margaret Colin character Constance Spano
James Rebhorn character Albert Nimzicki
Harvey Fierstein character Marty Gilbert
Adam Baldwin character Major Mitchell
Brent Spiner character Dr. Brackish Okun
James Duval character Miguel
Vivica A. Fox character Jasmine Dubrow
Lisa Jakub character Alicia
Ross Bagley character Dylan
Mae Whitman character Patricia Whitmore
Bill Smitrovich character Captain Watson
Kiersten Warren character Tiffany
Harry Connick Jr. character Capt. Jimmy Wilder
Giuseppe Andrews character Troy
John Storey character Dr. Isaacs
Frank Novak character Teddy
Devon Gummersall character Philip
Leland Orser character Techy / Med Asst #1
Mirron E. Willis character Aide
Ross Lacy character Aide
David Pressman character Whitmore's Aide
Vivian Palermo character Techy / Med Asst
Raphael Sbarge character Commander / Tech
Bobby Hosea character Commanding Officer
Dan Lauria character Commanding Officer
Steve Giannelli character Radar Tech
Eric Paskel character Radar Tech
Carlos Lacámara character Radar Operator
John Bennett Perry character Secret Serviceman
Troy Willis character Secret Serviceman
Tim Kelleher character Technician
Wayne Wilderson character Area 51 Technician
Jay Acovone character Area 51 Guard
James Wong character SETI Tech One
Thom Barry character SETI Tech Two
Jana Marie Hupp character SETI Tech Three
Matt Pashkow character Second Officer
Robert Pine character Chief of Staff
Marisa Johnston character Co-Worker #2
Michael Winther character Co-Worker #3
Warren Dexter Beatty character Co-Worker #4
Paul LeClair character Co-Worker #5
Michael Vacca character Lt. Peterson
David Channell character Secret Service Agent
John Capodice character Mario
Greg Collins character Military Aide
Derek Webster character Sky Crane Pilot
Mark Fite character Pilot
Eric Neal Newman character Pilot
Levani character Russian Pilot
Kristof Konrad character Russian Pilot
Kevin Sifuentes character Tank Commander
Elston Ridgle character Soldier
Randy Oglesby character Mechanic
Jack Moore character Mechanic
Barry Del Sherman character Street Preacher
Lyman Ward character Secret Service Agent
Anthony Crivello character Lincoln
Richard Speight Jr. character Ed
Barbara Beck character Monica Soloway
Joe Fowler character Reporter
Andrew Warner character Reporter
Sharon Tay character Reporter
Peter J. Lucas character Russian Reporter
Yelena Danova character Russian Newscaster
Johnny Kim character Korean Newscaster
Vanessa J. Wells character Newscaster
Jessika Cardinahl character German Video Newscaster
Gary W. Cruz character Video Newscaster
Ron Pitts character Video Newscaster
Wendy L. Walsh character Video Newscaster
Christine Devine character Video Newscaster
Mark Thompson character Video Newscaster
Ernie Anastos character Rex Black / NY Newscaster
Kevin Cooney character Atlantic Air CINC
Rance Howard character Chaplain
Nelson Mashita character Japanese Tech
Jeff Phillips character B-2 Pilot
Sayed Badreya character Arab Pilot
Adam Tomei character Sailor
John Bradley character Lucas
Kimberly Beck character Housewife
Thomas F. Duffy character Lieutenant
Andrew Keegan character Older Boy
Jon Shear character Thomson
Jim Piddock character Reginald
Frederic W. Barnes character Self
Eleanor Clift character Self
Jerry Dunphy character Self
Jack Germond character Self
Morton Kondracke character Self
John McLaughlin character Himself
Barry Nolan character Self
George Putnam character Self
Eric Michael Zee character Northridge Field Reporter
Pat Skipper character Redneck
Carlos Lara character Farmer Kid
Mike Monteleone character Butler
Lee Strauss character Elvis Fanatic
Lisa Star character Woman on Roof
Malcolm Danare character Intellectual on Roof
Arthur Brooks character Trucker on Roof
Michael Moertl character Thief
James J. Joyce character Master CPO
Joyce Cohen character Kim Peters (Reporter)
Julie Moran character Entertainment Tonight Reporter
Robin Groth character Flagstaff News Anchor
Richard Pachorek character LAPD Helicopter Pilot
Dakota character Boomer
Gary A. Hecker character Alien Vocal Effects (voice)
Frank Welker character Special Vocal Effects (voice)
