Madeleine Stowe
— Isabel Amberson Minafer
Bruce Greenwood
— Eugene Morgan
Jonathan Rhys Meyers
— George Amberson Minafer
Gretchen Mol
— Lucy Morgan
Jennifer Tilly
— Fanny Minafer
James Cromwell
— Major Amberson
Dina Merrill
— Mrs. Johnson
William Hootkins
— Uncle George
Garrick Hagon
— Tom Kinney
David Gilliam
— Wilbur Minafer
Bosco Hogan
— Frank Bronson
Patrick Clarke
— Roger
Darren McHugh
— Charlie Johnson
Eamon Rohan
— Sam the Butler
Jane Brennan
— Nurse
Kelly Campbell
— Lucy's Companion
Fiona Glascott
— Lucy's friend
Laura Brennan
— Lucy's Friend #2
Patrick David Nolan
— Reverend Smith
Ruy Folguera
— Orchestra Composer (uncredited)
Keith Allen
— George (Age 9)
Michael Devaney
— Eugene's Secretary
Mairead Devlin
— Nurse
Bernard Deegan
— Youth
Mark Doherty
— Drugstore Clerk
Jonathan Forbes
— First Beau
Kevin O'Leary
— Second Beau
Darren Donoghue
— Third Beau
James Donnelly
— Fourth Beau
Kieran D. Gough
— Fred Kinney (Age 22)