Onder andere met: Richard Dreyfuss (Roy Neary), François Truffaut (Claude Lacombe), Teri Garr (Ronnie Neary), Melinda Dillon (Jillian Guiler), Bob Balaban (David Laughlin), J. Patrick McNamara (Project Leader), Warren J. Kemmerling (Wild Bill), Roberts Blossom (Farmer), Philip Dodds (Jean Claude), Cary Guffey (Barry Guiler), Shawn Bishop (Brad Neary), Adrienne Campbell (Silvia Neary), Justin Dreyfuss (Toby Neary), Lance Henriksen (Robert), Merrill Connally (Team Leader), George DiCenzo (Major Benchley), Gene Dynarski (Ike), Mary Gafrey (Mrs. Harris)