Matthew McConaughey as Arthur Brennan

Naomi Watts as Joan Brennan

Ken Watanabe as Takumi Nakamura

Ryoko Seta as Airport Desk Agent

Sienna Tow as Girl in Airport

Naoko Marshall as Flight Attendant

Michiko Tomura as Woman on Train

Yusuke Tozawa as Man on Train

Abe Lee Tsunenori as Taxi Driver

Joe Girard as Man at Convenience Store

Jazmin Domenech as Young Woman

Luke DeWolfe as Young Man

Katie Aselton as Gabriella Laforte

Nada Despotovich as Maryanne Wescott

Christopher Tarjan as Gil Cramer

Charles Van Eman as Paul Wescott

Bruce Norris as Dr. Howerton

Joe Baken as Simon

Jordan Gavaris as Eric

Anna Friedman as Anna

Amanda Collins as Woman at Grocery Store

Jimi Stanton as Mailman

Ikuma Ando as Park Ranger 1

Juzo Yoshida as Park Ranger 2

Owen Burke as Ambulance Tech

Simba Dibinga as Ambulance Tech

Tatsuki Motoyoshi as Park Ranger 3

Richard Levine as Funeral Director

James Saito as Dr. Takahashi

Kioo Ikeda as Male Game Show Host

Aya Kinoshita as Female Game Show Host

Ai Yoshihara as Mental Health Specialist

Hyunri as Flight Attendant

Susan Garfield as Arthur's Friend