Jennifer Aniston

Annie Hughes (voice)

Harry Connick Jr.

Dean McCoppin (voice)

Vin Diesel

The Iron Giant (voice)

James Gammon

Foreman Marv Loach / Floyd Turbeaux (voice)

Cloris Leachman

Mrs. Lynley Tensedge (voice)

Christopher McDonald

Kent Mansley (voice)

John Mahoney

General Rogard (voice)

Eli Marienthal

Hogarth Hughes (voice)

M. Emmet Walsh

Earl Stutz (voice)

Jack Angel

Additional Voices (voice)