Amy AdamsDr. Louise Banks
Jeremy RennerIan Donnelly
Forest WhitakerColonel G. T. Weber
Michael StuhlbargAgent Halpern
Tzi MaGeneral Shang
Mark O'BrienCaptain Marks
Julia Scarlett DanHannah (12 yrs. old)
Abigail PniowskyHannah (8 yrs. old)
Jadyn MaloneHannah (6 yrs. old)
Carmela Nozza GuizzoHannah (4 yrs. old)
Andrew ShaverEnvironmental Tech
Shawn CampbellNews Reporter
Larry DayDeputy Director of the CIA Dan Ryder
Pat KielyEnvironmental Tech
Frank SchorpionDr. Kettler
Lucas Chartier-DessertPrivate Lasky
Lucy Van OldenbarneveldCNAC Anchor
Sonia VigneaultDr. J. Bydwell
Mark CamachoRichard Riley
Sabrina ReevesPress Secretary
Russell YuenChinese Scientist
Julian CaseyAustralian Scientist
Tony RobinowBritish Scientist
Anana RydvaldDanish Scientist
Ruth ChiangChinese Scientist
Sergiy MarchenkoRussian Officer
Brittany TeoStudent with Smartphone
Christian JadahPrivate Combs
Joe CobdenCryptographer #1
Lorne BrassCryptographer #2
Genevieve SiroisCryptographer #3
Abdul AyoolaSierra Leone Representative
Bineyam GirmaSudanese representative
Abdelghafour ElaazizAfrican Representative
Daniel EstebanVenezuelan Representative
Hal RobertsAmerican TV News Anchor
Matthew WillsonPreacher
Victor Andres Trelles TurgeonScience Team Member #1
Michael NangreavesScience Team Member #2
Robert D. MoraisMaster Sergeant Douglas
Mustafa HaidariForeign Correspondent
Albert KwanChinese Man
Reda GuerinikCommunications Operator #1
Adrien BennCommunications Operator #2
Sasha SamarCommunications Operator #3
Kathleen StavertCommunications Operator #4
Kattia ThonyNurse
Leisa ReidNurse
Brent SkagfordLieutenant
Gurdeep AhluwaliaSoldier
Brian DunstanTV Anchor
Dan DuranTV Anchor
Lori GrahamTV Anchor
Orla JohannesTV Anchor
Sangita PatelTV Anchor
Tammie SutherlandTV Anchor
Max WalkerTV Anchor
John Sanford MooreTV Anchor
Camille RossTV Anchor
Ola SturikTV Anchor
Karen BelfoSkype CIA Agent (uncredited)
Chloë BellandeMIT College girl (uncredited)
Philippe HartmannHalpern's Deputy Director (uncredited)
Laurean Adrian ParauUS Army Major (uncredited)
Nathaly ThibaultGala Guest (uncredited)
Leslie BakerMiddle Aged Woman (uncredited)
Alex M. YeuhJapanese Minister
Dave CampbellSoldier
Alexander Da MotaVenezuelan Military
Akul DangPakistani Scientist
Frank FiolaSoldier