Louise Banks
Ian Donnelly
Colonel Weber
Agent Halpern
Captain Marks
General Shang
8-Year-Old Hannah
12-Year-Old Hannah
6-Year-Old Hannah
Dr. Kettler
Private Lasky
Private Combs
CNAC Anchor
Environmental Tech
Dr. J. Bydwell
Richard Riley
Press Secretary
Australian Scientist
British Scientist
CIA Officer Dan Ryder
Preacher
Chinese Scientist
Russian Officer
Swedish Scientist
Sudan Representative
African Representative
Sierra Leone Representative
Japanese Minister
Venezuelan Representative
Chinese Man
Student with Smartphone
Cryptographer
Science Team Member
Communications Operator
Nurse
Lieutenant
Soldier
TV Anchor
Motion Capture Heptapod
4-Year-Old Hannah (uncredited)
Master Sergeant Douglas (uncredited)
Foreign Correspondent (uncredited)
Halpern's Deputy Director (uncredited)
US Army Major (uncredited)
Gala Guest (uncredited)
Middle Aged Woman (uncredited)
Soldier (uncredited)
Venezuelan Military (uncredited)
Pakistani Scientist (uncredited)