James McAvoy (Charles Xavier / Professor X), Michael Fassbender (Erik Lensherr / Magneto), Jennifer Lawrence (Raven / Mystique), Oscar Isaac (En Sabah Nur / Apocalypse), Nicholas Hoult (Hank McCoy / Beast), Lucas Till (Alex Summers / Havok), Rose Byrne (Moira MacTaggert), Alexandra Shipp (Ororo Munroe / Storm), Evan Peters (Pietro Maximoff / Quicksilver), Sophie Turner (Jean Grey), Olivia Munn (Betsy Braddock / Psylocke), Kodi Smit-McPhee (Kurt Wagner / Nightcrawler), Tye Sheridan (Scott Summers / Cyclops), Lana Condor (Jubilation Lee / Jubilee), Ben Hardy (Warren Worthington III / Angel), Josh Helman (Colonel William Stryker), Hugh Jackman (Logan / Wolverine), Joanne Boland (Mrs. Summers), Anthony Konechny (Proll an der Schule), Monique Ganderton (Reiter - Tod), Rochelle Okoye (Reiter - Hunger), Tómas Lemarquis (Caliban), Stan Lee (Stan Lee), T.J. McGibbon (Nina)