Kyle Chandler as Mark Russell

Vera Farmiga as Emma Russell

Millie Bobby Brown as Madison Russell

Ken Watanabe as Dr. Ishiro Serizawa

Zhang Ziyi as Dr. Ilene Chen / Dr. Ling

Bradley Whitford as Dr. Rick Stanton

Sally Hawkins as Dr. Vivienne Graham

Charles Dance as Alan Jonah

Thomas Middleditch as Sam Coleman

Aisha Hinds as Colonel Diane Foster

O'Shea Jackson Jr. as Chief Warrant Officer Barnes

David Strathairn as Admiral William Stenz

Anthony Ramos as Staff Sergeant Martinez

Elizabeth Faith Ludlow as First Lieutenant Griffin

Jonathan Howard as Asher Jonah

CCH Pounder as Senator Williams

Joe Morton as Dr. Houston Brooks

Randy Havens as Dr. Tim Mancini

Lyle Brocato as Executive Officer Bowman

Jimmy Gonzales as Commander Crane

T.C. Matherne as Master Sergeant Hendricks

Kenneth Israel as Argo Deck Officer Zellner

Justice Leak as Monarch Officer Martin

Al Vicente as Isla de Mara Fisherman

Rose Bianco as Isla de Mara Grandmother

Gabriel L. Silva as Isla de Mara Grandson

Skylar Denney as Argo Officer Arvin

Kelli Garner as Argo Officer Cross

Tyler Crumley as Young Andrew

Lexi Rabe as Young Madison

Zac Zedalis as Sergeant Travis

Tracie Garrison as Asaj

Natalie Shaheen as Lieutenant Bottin

Jesse O'Neill as Corporal Winston

Joshua Leary as Sergeant Baker

Vince Foster as G-Team Officer Tippett

Shauna Rappold as G-Team Officer Harryhausen

Fiona Hardingham as News Anchor #1

Orelon Sidney as News Anchor #2

Paul Ryden as News Anchor #3

Laurie Dhue as News Anchor #4

Kevin Shinick as Weather Man

T.J. Storm as Godzilla Performance Capture

Jason Liles as King Ghidorah Performance Capture

Alan Maxson as King Ghidorah Performance Capture

Richard Dorton as King Ghidorah Performance Capture

Seth Green as Fighter Pilot (uncredited)

Eli Roth as Fighter Pilot (uncredited)

James William Ballard as Mercenary (uncredited)

Joey Beni as Lt. Gentry (uncredited)

Gerardo Bosco as Isla de Mara Fat Runner (uncredited)

Madeline Brumby as G-Team (uncredited)

John David Bulla as Jonah's Mercenary #2 (uncredited)

Hans Bush as Colonel Bush (uncredited)

Marko Caka as Jonah's Mercenary #9 (uncredited)

Andrea Antonio Canal as Argo Crew (uncredited)

Timothy Carr as Emt (uncredited)

Greg Clarkson as Anchor #5 (uncredited)

Michael Dougherty as Fighter Pilot (uncredited)

Robin Dyke as Monarch Scientist (uncredited)

Fred Galle as Egan (uncredited)

Christopher Bryan Gomez as Monarch Scientist (uncredited)

Clare Grant as Fighter Pilot (uncredited)

Anthony B. Harris as National Guard Soldier (uncredited)

Kasia Hart as Sonogram Technician (uncredited)

Cecil M. Henry as Ausprey Refueler (uncredited)

Maxwell Highsmith as Scientist (uncredited)

Mallory Hoff as Reporter #5 (uncredited)

Brian Kayode-Patrick Johnson as Boston Evacuee (uncredited)

Andrea Maiuro as Village Fisherman (uncredited)

Van Marten as Dr. Chen's Assistant (uncredited)

Shaun McLane as Submarine Pilot (uncredited)

Shaun McMillan as Aircraft Ground Crew (uncredited)

Roger K. Moore as Military Special Forces (uncredited)

Tony Morgan as Monarch Scientist (uncredited)

Stephen Moyer as Fighter Pilot (uncredited)

Leiloni Arrie Pharms as Terrified Little Girl (uncredited)

Sasha Rionda as Reporter (uncredited)

Diana Rombola as Argo Crew (uncredited)

Andres Salgado as Isis Guard (uncredited)

Zach Shields as Fighter Pilot (uncredited)

Beverley Simmons as Senator (uncredited)

Max Soliz as Village Fisherman (uncredited)

Thomas W. Stewart as Argo Crew (uncredited)

Joey Thurmond as Scientist (uncredited)

Miguel Angel Varela Fimbres as Street Scaping Daring Tourist (uncredited)

Buddy Watkins as Grounds Crew / Base Gaurd (uncredited)

Benjamin Weaver as Deck Officer (uncredited)

Jamie Wedel as Deck Commander (uncredited)

Michael David Yuhl as Paramedic (uncredited)

Robert Tinsley as Construction Worker (uncredited)