Ragnar Lothbrok

Travis Fimmel

Lagertha

Katheryn Winnick

Earl Haraldson

Gabriel Byrne

Floki

Gustaf Skarsgård

Bjorn Lothbrok

Alexander Ludwig

Rollo

Clive Standen

Torvi

Georgia Hirst

Siggy Haraldson

Jessalyn Gilsig

King Harald Finehair

Peter Franzén

Athelstan

George Blagden

Ivar Lothbrok / Ivar the Boneless

Alex Høgh Andersen

King Aelle

Ivan Kaye

Ubbe Lothbrok

Jordan Patrick Smith

Aslaug

Alyssa Sutherland

King Ecbert

Linus Roache

Hvitserk Lothbrok

Marco Ilsø

Helga

Maude Hirst

Judith

Jennie Jacques

Aethelwulf

Moe Dunford

The Seer / Pope Leo IV / The Seer (voice)

John Kavanagh

Kjetill Flatnose

Adam Copeland

Alfred

Ferdia Walsh-Peelo

Halfdan the Black

Jasper Pääkkönen

Erlendur

Edvin Endre

Gunnhild

Ragga Ragnars

Freydis / Katia

Alicia Agneson

Torstein

Jefferson Hall

Margrethe

Ida Marie Nielsen

Bishop Edmund

Philip O'Sullivan

Astrid

Josefin Asplund

Ingrid

Lucy Martin

Ingvild

Kelly Campbell

Frodi

Scott Graham

Bishop Heahmund

Jonathan Rhys Meyers

Princess Gisla

Morgane Polanski

Kalf

Ben Robson

Roland

Huw Parmenter

Ubbe

Cormac Melia

Aethelred

Darren Cahill

Erik

Eric Johnson

Young Bjorn Lothbrok / Bjorn Lothbrok

Nathan O'Toole

Queen Kwenthrith / Princess Kwenthrith

Amy Bailey

Hvitserk

Cathal O'Hallin

Porunn

Gaia Weiss

Emperor Charles

Lothaire Bluteau

Hali

Ryan Henson

Igor

Oran Glynn O'Donovan

King Horik

Donal Logue

Gyda / Gyda Ragnarsdóttir

Ruby O'Leary

Count Odo

Owen Roe

Therese

Karen Hassan

Sigurd Lothbrok

David Lindström

Aud

Leah McNamara

King Olaf the Stout

Steven Berkoff

Helgi the Lean

Jack McEvoy

Elsewith

Roisin Murphy

Othere

Ray Stevenson

Eyvind / Dom

Kristen Holden-Ried

Amma

Kristy Dawn Dinsmore

Asa

Elodie Curry

Rafarta / Woman

Donna Dent

Asbjorn

Elijah Rowen

White Hair

Kieran O'Reilly

Jarl Borg

Thorbjørn Harr

Sinric

Frankie McCafferty

Guthrum

Ben Roe

Thorunn

Mei Bignall

Arne

Tadhg Murphy

Hvitserk

Stephen Rockett

Ubbe

Luke Shanahan

Ealdorman 2 / Saxon Noble / Noble 2

Chris McHallem

Sigurd

Elijah O'Sullivan

Thyri Haraldson / Thyri

Elinor Crawley

Lord Cuthred

Jonathan Delaney Tynan

Jorunn

Lulubelle Earley

Magnus

Dean Ridge

Asa

Svea Killoran

Prince Dir

Lenn Kudrjawizki

Gudrid

Noella Brennan

Einar

Steve Wall

Viking

Aaron Lee Reed

Yidu

Dianne Doan

Ivar

James Quinn Markey

Chief Priest / Pagan Priest / Priest Uppsala

Niall Ó Sioradáin

Viking Warrior

Robert MacDomhnail

Chief Priest (as Niall O'Siordain) / Pagan Priest (as Niall O'Siordain) / Chief Priest (as Naill O'Siordain)

Niall O'Siordáin

Svein

David Pearse

Leif

Diarmaid Murtagh

Harbard / The Wanderer

Kevin Durand

Bjarke

Gary Kenneally

Prudentius

Seán T. Ó Meallaigh

Cyneheard / Noble 3

Malcolm Douglas

Thora

Eve Connolly

Ganbaatar

Andrei Claude

Bul

James Craze

Naad

Ian Lloyd Anderson

Ellisef

Carrie Crowley

Waerferth the Scout

Des Carney

Alfred

Conor O'Hanlon

Alfred

Isaac O'Sullivan

Tanaruz

Sinead Gormally

Thorgrim

Rob Malone

Saxon Scribe

Jim Roche

Ivar's Bodyguard / Captain of the Guard

Michael Power