Hugh Jackman as Peter

Zen McGrath as Nicholas

Vanessa Kirby as Beth

Laura Dern as Kate

Anthony Hopkins as Anthony

William Hope as Andrew

George Cobell as Nicholas (6 Years)

Felix Goddard as Theo

Max Goddard as Theo

Shin-Fei Chen as Alexandra

Nancy Baldwin as Principal's Secretary

Akie Kotabe as Mr. Yama

Isaura Barbé-Brown as Sophia

Erick Hayden as Allan

Joseph Mydell as Brian

Rachel Handshaw as Brian's Assistant

Gabriel Ecoffey as Intern

Stephanie Palies as Assistant

George Potts as Therapist

Reza Diako as Waiter

Yolanda Nieto as Maria

Danielle Lewis as Jessica

Gretchen Egolf as E.R. Psychiatrist

Alex Mugnaioni as Nurse

Hugh Quarshie as Doctor Harris

Mercedes Bahleda as Mary (uncredited)

Van Pierre as Steven (uncredited)

Rene Costa as Hospital Attendant (uncredited)

Joakim Skarli as Boardroom Executive (uncredited)

Julia Westcott-Hutton as Boardroom Executive (uncredited)

Kenny-Lee Mbanefo as Boardroom Executive (uncredited)

Riccardo Mazzi as Business Executive Staff (uncredited)