Russell Crowe
Father Gabriele Amorth
Daniel Zovatto
Father Esquibel
Peter DeSouza-Feighoney
Henry
Ralph Ineson
Asmodeus (voice)
Ryan O'Grady
Cardinal Sullivan
Cornell John
Bishop Lumumba
Santi Bayón
Roberto Vasquez IV (Henry's Dad)
Alessandro Gruttadauria
Father Gianni
River Hawkins
Enzo / Halphas
Edward Harper-Jones
Young Amorth
Matthew Sim
Cardinal Abato
Victor Solé
Spanish Doctor
Tom Bonington
Vatican Doctor
Andrea Dugoni
Drunken Farmer
Laila Barwick
Daughter (Farmhouse)
Gennaro Diana
Italian Priest
Pablo Raybould
Bishop Barbuto
Derek Carroll
Doctor (uncredited)
Ella Cannon
Partisan #2 (uncredited)
Amey De Souza
Villager (uncredited)
