Taylor Kitsch

Lieutenant Alex Hopper

Alexander Skarsgård

Commander Stone Hopper

Rihanna

Petty Officer Cora 'Weps' Raikes

Brooklyn Decker

Sam

Tadanobu Asano

Captain Yugi Nagata

Hamish Linklater

Cal Zapata

Liam Neeson

Admiral Shane

Peter MacNicol

Secretary of Defense

John Tui

Chief Petty Officer Walter "The Beast" Lynch

Jesse Plemons

Boatswain Mate Seaman Jimmy "Ordy" Ord

Gregory D. Gadson

Lieutenant Colonel Mick Canales

Jerry Ferrara

Sampson JOOD Strodell

Adam Godley

Dr. Nogrady

Rico McClinton

Captain Browley

Joji Yoshida

Chief Engineer Hiroki

Louis Lombardi

Bartender

Stephen Bishop

JPJ OOD

Dante Jimenez

JPJ XO Mullenaro

Austin Naulty

JPJ Fireman

Sebastian James

JPJ Scat

Damien Seanard Parker

JPJ Helibay Sailor

Carson Aune

CIC Gunner

Doug Penty

CIC Watch Supervisor

Josh Pence

Combat Systems Coordinator

Peter Berg

JPJ 2nd Gunner

Lloyd Pitts

JPJ Port Gunner

Anthony Czumalowski

JPJ Sailor

John A. Weaver

JPJ Sailor

Phil Neilson

JPJ Sailor

Dane Justman

Sampson OOD

Drew Rausch

Sampson XO

Yutaka Takeuchi

Myoko XO

Rick Hoffman

Chairman, Joint Chiefs of Staff

Bill Stinchcomb

Marine Commandant

Gary Grubbs

Air Force Chief of Staff

David Jensen

NASA Director

Mike Meldman

Commander Meldman

Joe Chrest

JPL Controller

Billy Slaughter

BIP Technician

Griff Furst

BIP HQ Controller #2

Terri Battee

BIP Journalist

David Kors

BIP Scientist

Christopher McGahan

Cal's Jr. Tech

Kerry Cahill

Cal's Female Colleague

Liz Wicker

Female Newscaster

Michelle Arthur

British Newscaster

Natalia Castellanos

Spanish Newscaster

Dan Cooke

Hawaiian Newscaster

Leni Ito

Japanese Newscaster

Jay Jackson

American Newscaster

Jackie Johnson

Jackie Johnson

Robin Atkin Downes

Soccer Announcer

Zach Selwyn

Soccer Announcer

Citizen Cope

Singer at Bar

Cora Yamagata

Convenience Store Owner

Frank Cassavetes

Grizzled Gunner

Thomas McCurdy

Admiral Shane's Aide

Rami Malek

Watch Officer

Ray Mabus

Reagan CO

Dennis M. Keating

Old Salt

George O'Hanlon, Jr.

Tourist Guide

Marcus Lyle Brown

Regent Land Commander

Kyle Clements

Regent Sea Commander

Kevin P. Kearns

Jimmy

John Bell

Angus

Conor McCarry

Ronnie

Gerardo Celasco

Ensign Chavez

Teresa Alvarez

Reporter (uncredited)

Luing Andrews

Admiral Jack (uncredited)

Fileena Bahris

Soccer Fan (uncredited)

Tim Blanchard

Regent (uncredited)

Raj K. Bose

Singaporean Captain (uncredited)

Edward J. Clare

Scientist (uncredited)

Paul Edney

U.S. Navy Captain (uncredited)

Kerry-Ann Ellington

Navy Wife (uncredited)

Kasey Emas

Bar Patron (uncredited)

Faith Fay

Harrison (uncredited)

Jaq Galliano

Alien Regent / Thug (uncredited)

Mickey Graue

Baseball Kid (uncredited)

Christopher Lee Herod

Marine (uncredited)

James Koons

Petty Officer (uncredited)

Anthony A. Kung

Japanese Soccer Player (uncredited)

Wes Martinez

International Anchor (uncredited)

Arlene Newman

Naval Officer

Adam J. Reeb

Petty Officer 3rd Class (uncredited)

Jane Runnalls

Naval Officer (uncredited)

Kristen StephensonPino

Hot Chick (uncredited)

Kelly R. Thomas

Alien Ground Commander (uncredited)

Joseph Wilson

Alien Regent Scientist / MO CAP (uncredited)

Michael Wozniak

Journalist (uncredited)

Barack Obama

Self (uncredited)