Jeremy Irons as Beverly Mantle / Elliot Mantle

Geneviève Bujold as Claire Niveau

Heidi von Palleske as Cary

Barbara Gordon as Danuta

Shirley Douglas as Laura

Stephen Lack as Wolleck / Anders Wolleck

Nick Nichols as Leo

Lynne Cormack as Arlene

Damir Andrei as Birchall

Miriam Newhouse as Mrs. Bookman

David Hughes as Superintendent

Richard W. Farrell as Dean of Medicine

Warren Davis as Anatomy Class Supervisor

Marsha Moreau as Raffaella

Denis Akiyama as Pharmacist

Dee McCafferty as Surgeon

Jane Luk as Lecture-Hall Nurse

Jill Hennessy as Mimsy

David Cronenberg as Obstetrician (uncredited)

Bob Bainborough as Mr. Glaser

Jacqueline Hennessy as Escort Twin

Jonathan Haley as Beverly Age 9

Nicholas Haley as Elliot Age 9

Susan Markle as Operating Room Nurse

Murray Cruchley as Assisting Surgeon

Tita Trevisan as Furniture Salesman

David Walden as Director

Liliane Stillwell as Wardrobe Person

Denise McLeod as Art Gallery Lady

Nicholas Rice as MC

Joe Matheson as Sean / Waiter

Hadley Kay as Delivery Boy

Cynthia Eastman as Sobbing Woman

Nora Colpman as Mrs. Randell

Rena Polley as Soap Opera Character

Madeleine Atkinson as Soap Opera Character

John Bayliss as Performance Double

Graham Evans as Picture Double

Alan Gough as Director (uncredited)

Jordan-Patrick Marcantonio as Twin Boy (uncredited)

Julian-Peter Marcantonio as (uncredited)

Greg Van Riel as Man in Reception (uncredited)