Amy Adams

Louise Banks

Jeremy Renner

Ian Donnelly

Forest Whitaker

Colonel Weber

Michael Stuhlbarg

Agent Halpern

Mark O'Brien

Captain Marks

Tzi Ma

General Shang

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

Andrew Shaver

Environmental Tech

Pat Kiely

Environmental Tech

Sonia Vigneault

Dr. J. Bydwell

Sabrina Reeves

Press Secretary

Julian Casey

Australian Scientist

Tony Robinow

British Scientist

Larry Day

CIA Officer Dan Ryder

Matthew Willson

Preacher

Ruth Chiang

Chinese Scientist

Russell Yuen

Chinese Scientist

Anana Rydvald

Swedish Scientist

Bineyam Girma

Sudan Representative

Abdelghafour Elaaziz

African Representative

Abdul Ayoola

Sierra Leone Representative

Daniel Esteban

Venezuelan Representative

Albert Kwan

Chinese Man

Brittany Teo

Student with Smartphone

Joe Cobden

Cryptographer

Lorne Brass

Cryptographer

Genevieve Sirois

Cryptographer

Victor Andres Trelles Turgeon

Science Team Member

Michael Nangreaves

Science Team Member

Reda Guerinik

Communications Operator

Sasha Samar

Communications Operator

Kathleen Stavert

Communications Operator

Kattia Thony

Nurse

Leisa Reid

Nurse

Brent Skagford

Lieutenant

Gurdeep Ahluwalia

Soldier

Shawn Campbell

TV Anchor

Brian Dunstan

TV Anchor

Dan Duran

TV Anchor

John Sanford Moore

TV Anchor

Sangita Patel

TV Anchor

Camille Ross

TV Anchor

Max Walker

TV Anchor

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)

Leslie Baker

Middle Aged Woman (uncredited)

Dave Campbell

Soldier (uncredited)

Frank Fiola

Soldier (uncredited)