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