Will Smith Capt. Steven Hiller
Bill Pullman President Thomas J. Whitmore
Jeff Goldblum David Levinson
Mary McDonnell Marilyn Whitmore
Adam Baldwin Major Mitchell
Mae Whitman Patricia Whitmore
Vivica A. Fox Jasmine Dubrow
Frank Welker Special Vocal Effects (voice)
Margaret Colin Constance Spano
Robert Loggia General William Grey
Judd Hirsch Julius Levinson
Roland Emmerich Executive Producer, Director, Screenplay
James Duval Miguel
Harry Connick Jr. Capt. Jimmy Wilder
Robert Pine Chief of Staff
Bill Smitrovich Captain Watson
Randy Quaid Russell Casse
Raphael Sbarge Commander / Tech
Brent Spiner Dr. Brackish Okun
James Rebhorn Albert Nimzicki
Thom Barry SETI Tech Two
Kimberly Beck Housewife
Leland Orser Techy / Med Asst #1
Levan Uchaneishvili Russian Pilot
Harvey Fierstein Marty Gilbert
Richard Speight Jr. Ed
Dan Lauria Commanding Officer
Donna Keegan Stunts
Devon Gummersall Philip
Rance Howard Chaplain
Kiersten Warren Tiffany
Lisa Jakub Alicia
Gary A. Hecker Alien Vocal Effects (voice)
John Bennett Perry Secret Serviceman
Tim Kelleher Technician
Dean Devlin Second Unit Director, Screenplay, Producer
Dan Bradley Stunts, Stunt Coordinator
Mickey Giacomazzi Stunts
Sayed Badreya Arab Pilot
Greg Collins Military Aide
Andrew Keegan Older Boy
Barry Del Sherman Street Preacher
Derek Webster Sky Crane Pilot
Frank Ferrara Sr. Stunts
Giuseppe Andrews Troy
Ross Bagley Dylan
Richard Epcar ADR Voice Casting
Randy Oglesby Mechanic
Kevin Cooney Atlantic Air CINC
Lyman Ward Secret Service Guy
Jimmy N. Roberts Stunts
Pat Skipper Redneck
David Pressman Whitmore's Aide
Carlos Lacámara Radar Operator
Peter Bucossi Stunts
Sergio Mimica-Gezzan First Assistant Director
Bobby Hosea Commanding Officer
Sharon Tay Reporter
John Storey Dr. Isaacs
Frank Novak Teddy
Rick Avery Stunts
Jim Piddock Reginald
Thomas F. Duffy Lieutenant
Gene LeBell Stunts
Wayne Wilderson Area 51 Technician
Chris Howell Stunts
Patrick Tatopoulos Production Design, Creature Design
Kevin Sifuentes Tank Commander
Malcolm Danare Intellectual on Roof
Bernard Telsey Local Casting
Oana Bogdan Miller Art Department Coordinator
Eliza Coleman Stunts