Patrick Stewart as Professor Charles Xavier

Hugh Jackman as Logan / Wolverine

Brian Cox as William Stryker

Ian McKellen as Eric Lehnsherr / Magneto

Famke Janssen as Jean Grey

Halle Berry as Ororo Munroe / Storm

James Marsden as Scott Summers / Cyclops

Alan Cumming as Kurt Wagner / Nightcrawler

Rebecca Romijn as Raven Darkholme / Mystique

Aaron Stanford as John Allerdyce / Pyro

Shawn Ashmore as Bobby Drake / Ice Man

Anna Paquin as Rogue

Kelly Hu as Yuriko Oyama / Deathstrike

Michael Reid MacKay as Jason 143

Bruce Davison as Senator Kelly

Katie Stuart as Kitty Pryde

Ty Olsson as Mitchell Laurio

Daniel Cudmore as Piotr Rasputin / Colossus

Cotter Smith as President McKenna

James Kirk as Ronny Drake

Jill Teed as Madeline Drake

Alf Humphreys as William Drake

Kea Wong as Jubilation Lee / Jubilee

Chiara Zanni as White House Tour Guide

Jackie A. Greenbank as President's Secretary

Michael Soltis as White House Checkpoint Agent

Michael David Simms as White House Agent (Lead Agent)

David Fabrizio as Oval Office Agent Fabrizio

Roger Cross as Oval Office Agent Cartwright

Richard Bradshaw as Special Ops Agent

Bryce Hodgson as Artie

Glen Curtis as Museum Teenager #1

Greg Rikaart as Museum Teenager #2

Shauna Kain as Theresa Rourke / Siryn

Alfonso Quijada as Federal Bldg. Cleaning Twin #1

Rene Quijada as Federal Bldg. Cleaning Twin #2

Brad Loree as Stryker at age 40

Sheri G. Feldman as Augmentation Room Doctor

Connor Widdows as Jones

Peter Wingfield as Stryker Soldier Lyman

Charles Siegel as Dr. Shaw

Steve Bacic as Dr. Hank McCoy

Michasha Armstrong as Plastic Prison Guard

Robert Hayley as Cop

Mark Lukyn as Cop #1 (Lead Cop)

Kendall Cross as Cop #2

Keely Purvis as Little Girl 143

Dylan Kussman as Stryker Soldier Wilkins

Jason S. Whitmer as Stryker Soldier Smith

Aaron Pearl as Stryker Soldier

Aaron Douglas as Stryker Soldier

Colin Lawrence as Stryker Soldier

Richard C. Burton as Stryker Soldier

Michael Joycelyn as Stryker Soldier

Nolan Gerard Funk as X-Kid (captured)

Devin Douglas Drewitz as X-Kid (captured)

Jermaine Lopez as X-Kid (captured)

Sideah Alladice as X-Kid (captured)

Kurt Max Runte as Chief of Staff Abrahams

Benjamin Glenday as Cameraman

Lori Stewart as F-16 Fighter Pilot

Ted Friend as News Reporter

Mi-Jung Lee as News Reporter

Marrett Green as News Reporter

Jill Krop as News Reporter

Brian Peck as News Reporter

Layke Anderson as Douglas Ramsey / Cypher

Michael Dougherty as Surgeon

Dan Harris as Surgeon

Bryan Singer as Prison Security Officer (uncredited)

Nikita Ramsey as Twin X-Kid (uncredited)

Jade Ramsey as Twin X-Kid (uncredited)

Valerie Tian as X-Kid at Museum (uncredited)