Amy Adams
Role: Louise Banks
Jeremy Renner
Role: Ian Donnelly
Forest Whitaker
Role: Colonel Weber
Michael Stuhlbarg
Role: Agent Halpern
Mark O'Brien
Role: Captain Marks
Tzi Ma
Role: General Shang
Abigail Pniowsky
Role: 8-Year-Old Hannah
Julia Scarlett Dan
Role: 12-Year-Old Hannah
Jadyn Malone
Role: 6-Year-Old Hannah
Frank Schorpion
Role: Dr. Kettler
Lucas Chartier-Dessert
Role: Private Lasky
Christian Jadah
Role: Private Combs
Lucy Van Oldenbarneveld
Role: CNAC Anchor
Andrew Shaver
Role: Environmental Tech
Pat Kiely
Role: Environmental Tech
Sonia Vigneault
Role: Dr. J. Bydwell
Mark Camacho
Role: Richard Riley
Sabrina Reeves
Role: Press Secretary
Julian Casey
Role: Australian Scientist
Tony Robinow
Role: British Scientist
Larry Day
Role: CIA Officer Dan Ryder
Matthew Willson
Role: Preacher
Ruth Chiang
Role: Chinese Scientist
Russell Yuen
Role: Chinese Scientist
Sergiy Marchenko
Role: Russian Officer
Anana Rydvald
Role: Swedish Scientist
Bineyam Girma
Role: Sudan Representative
Abdelghafour Elaaziz
Role: African Representative
Abdul Ayoola
Role: Sierra Leone Representative
Alex M. Yeuh
Role: Japanese Minister
Daniel Esteban
Role: Venezuelan Representative
Albert Kwan
Role: Chinese Man
Brittany Teo
Role: Student with Smartphone
Joe Cobden
Role: Cryptographer
Lorne Brass
Role: Cryptographer
Genevieve Sirois
Role: Cryptographer
Victor Andres Trelles Turgeon
Role: Science Team Member
Michael Nangreaves
Role: Science Team Member
Reda Guerinik
Role: Communications Operator
Adrien Benn
Role: Communications Operator
Sasha Samar
Role: Communications Operator
Kathleen Stavert
Role: Communications Operator
Brent Skagford
Role: Lieutenant
Gurdeep Ahluwalia
Role: Soldier
Shawn Campbell
Role: TV Anchor
Brian Dunstan
Role: TV Anchor
Lori Graham
Role: TV Anchor
Orla Johannes
Role: TV Anchor
John Sanford Moore
Role: TV Anchor
Sangita Patel
Role: TV Anchor
Hal Roberts
Role: TV Anchor
Camille Ross
Role: TV Anchor
Ola Sturik
Role: TV Anchor
Tammie Sutherland
Role: TV Anchor
Max Walker
Role: TV Anchor
Marc-André Goulet
Role: Motion Capture Heptapod
Paul-Antoine Taillefer
Role: Motion Capture Heptapod
Martin Jr Pelletier
Role: Motion Capture Heptapod
Carmela Nozza Guizzo
Role: 4-Year-Old Hannah (uncredited)
Robert D. Morais
Role: Master Sergeant Douglas (uncredited)
Mustafa Haidari
Role: Foreign Correspondent (uncredited)
Philippe Hartmann
Role: Halpern's Deputy Director (uncredited)
Laurean Adrian Parau
Role: US Army Major (uncredited)
Nathaly Thibault
Role: Gala Guest (uncredited)
Leslie Baker
Role: Middle Aged Woman (uncredited)
Dave Campbell
Role: Soldier (uncredited)
Alexander Da Mota
Role: Venezuelan Military (uncredited)
Akul Dang
Role: Pakistani Scientist (uncredited)
Frank Fiola
Role: Soldier (uncredited)
