John Cusack as Jackson Curtis, a struggling writer who has to work as a limousine driver

Chiwetel Ejiofor as Dr. Adrian Helmsley, geologist and scientific advisor to the President of the United States

Amanda Peet as Kate Curtis, a medical student and Jackson's ex-wife

Liam James as Noah Curtis, Jackson and Kate's son

Morgan Lily as Lilly Curtis, Jackson and Kate's daughter

Thomas McCarthy as Dr. Gordon Silberman, Kate's current boyfriend, a plastic surgeon

Danny Glover as Thomas Wilson, the President of the United States

Thandie Newton as Dr. Laura Wilson, President Wilson's daughter

Oliver Platt as Carl Anheuser, the President's Chief of Staff

Zlatko Burić as Yuri Karpov, a Russian billionaire

Beatrice Rosen as Tamara, Yuri's Russian girlfriend

Alexandre and Philippe Haussmann as Alec and Oleg Karpov, Yuri's twin sons

Woody Harrelson as Charlie Frost, a fringe science conspiracy theorist and radio talk show host

Chin Han as Tenzin, a worker in Tibet

Osric Chau as Nima, a Buddhist monk and Tenzin's brother

Lisa Lu as Grandma Sonam, Nima and Tenzin's grandmother

John Billingsley as Professor Frederic West, an American scientist

Ryan McDonald as Scotty, Dr. Helmsley's assistant

Johann Urb as Sasha, a Russian pilot and Tamara's lover

Blu Mankuma as Harry Helmsley, Adrian's father and Tony's musical partner

George Segal as Tony Delgatto, an elderly traveling musician and Harry's musical partner

Jimi Mistry as Dr. Satnam Tsurutani, an Indian scientist who discovers the events causing the catastrophe

Stephen McHattie as Captain Michaels, the captain of the ark that Jackson and his family stowaway on

Henry O as Lama Rinpoche

Dean Marshall as Ark communication officer

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