Charlie Hunnam
Raleigh Becket
Rinko Kikuchi
Mako Mori
Idris Elba
Stacker Pentecost
Max Martini
Herc Hansen
Clifton Collins Jr.
Tendo Choi
Ron Perlman
Hannibal Chau
Charlie Day
Dr. Newton Geiszler
Burn Gorman
Dr. Hermann Gottlieb
Robert Kazinsky
Chuck Hansen
Robert Maillet
Lt. Aleksis Kaidanovsky
Heather Doerksen
Lt. Sasha Kaidanovsky
Larry Joe Campbell
Tommy T
Brad William Henke
Miles
Diego Klattenhoff
Yancy Becket
Santiago Segura
Wizened Man
Jane Watson
Raleigh and Yancy's Mom
Jung-Yul Kim
Hannibal Chau Thug
Joshua Peace
Officer
Mana Ashida
Young Mako
Joe Pingue
Captain Merrit
Milton Barnes
McTighe
Brian Frank
1st Officer
Ellen McLain
Gipsy Danger AI (voice)
David Fox
Old Man on Beach
Jake Goodman
Child
Robin Thomas
American UN Representative
Julian Barnes
British UN Representative
David Richmond-Peck
Canadian UN Representative
Sebastian Pigott
Engineer
J.C. Kenny
TV Reporter
Robert Morse
Raleigh and Yancy's Dad
Mike Chute
Saltchuck Crew
Duncan McLeod
Saltchuck Crew
Louis Paquette
Saltchuck Crew
Matthew G. Taylor
Saltchuck Crew
Frank Nakashima
UN Representative
Terry Belleville
UN Representative
Farzad Sadrian
UN Representative
Mishu Vellani
UN Representative
Clive Walton
UN Representative
Peter Kosaka
Young Mako's Father
Yiren Stark
Young Mako's Mother
Mark Luu
Wei Tang Triplet
Charles Luu
Wei Tang Triplet
Lance Luu
Wei Tang Triplet
William S. Wong
Engineer (uncredited)
Victoria Sawal
Chinese Girl in Anti-Kaiju Refuge
Timothy Gibbs
Marine (uncredited)