导演 詹姆斯·马什

Stephen Hawking 埃迪·雷德梅恩

Jane Hawking 菲丽希缇·琼斯

Jonathan Hellyer Jones 查理·考克斯

Beryl Wilde 艾米丽·沃森

Frank Hawking 西蒙·迈克伯尼

Dennis Sciama 大卫·休里斯

Elaine Mason 玛克辛·皮克

Brian 哈里·劳埃德

Robert Hawking (Age 17) 汤姆·普赖尔

Lucy Hawking (Age 14) Sophie Perry

Timothy Hawking (Age 8) Finlay Wright-Stephens

Diana King 艾丽丝·奥尔尤因

Carter Thomas Morrison

Ellis Michael Marcus

Rees Gruffudd Glyn

Barman - Rowing Club Paul Longley

George Wilde Guy Oliver-Watts

Mary Hawking Lucy Chappell

Philippa Hawking 夏洛特·霍普

Isobel Hawking 阿比盖尔·克鲁滕登

Physicist #1 Nicholas Gerard-Martin

Physicist #2 Brett Brown

Physicist #3 Anthony Skrimshire

Roger Penrose 克里斯蒂安·麦凯

Senior Doctor - Cambridge Hospital 亞當·戈德利

Bedder Nicola Sloane

Robert Hawking (New Born) Lottie Hamilton

Kip Thorne 恩佐·西伦蒂

Robert Hawking (Age 2) Rufus Taylor

Lucy Hawking (New Born) Delilah Sexton

Eileen Bond 艾琳·戴维斯

John Taylor 西蒙·钱德勒

Khalatnikov Georg Nikoloff

Robert Hawking (Age 8) Oliver Payne

Lucy Hawking (Age 6) 拉菲埃拉·查普曼

Timothy Hawking (Baby) Sam Houston

Sarah (Geneva Student) Victoria Emslie

Swiss Doctor Frank Lebœuf

Technician Will Barton

Female Fan Lucy Challenger

Cockcroft Guest #2 Nicola Victoria Buck

Cockcroft Guest #3 Stuart Benson

Cockcroft Guest #5 Andrew Bridgmont

Cockcroft Guest #4 Jamie Edwards

Cockcroft Guest #1 Jumaane Brown

Undergraduate (uncredited) Becky Bush

Journalist (uncredited) Jon Wennington

Journalist (uncredited) Cynthia Garbutt