• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Lothaire Bluteau (Emperor Charles), John Kavanagh (The Seer)
• Guest Starring: George Blagden (Athelstan), Dianne Doan (Yidu), Maude Hirst (Helga), Owen Roe (Count Odo), Edvin Endre (Erlendur), Georgia Hirst (Torvi), Søren Pilmark (Stender), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Stephen Rockett (Hvitserk), Luke Shanahan (Ubbe), Elijah O'Sullivan (Sigurd), James Quinn Markey (Ivar), Steve Wall (Einar), Shashi Rami (Slave Trader), Rosalie Connerty (Angrboda), Barry McGovern (French Archbishop), Frankie McCafferty (Sinric), Huw Parmenter (Roland), Karen Hassan (Therese), Simon Jewell (Frankish Officer), Cillian O'Sullivan (Eirik)
• Written By: Michael Hirst
• Directed By: Ciarán Donnelly

• Starring: Travis Fimmel (Ragnar), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), George Blagden (Athelstan), Moe Dunford (Aethelwulf), Maude Hirst (Helga), Owen Roe (Count Odo), Jennie Jacques (Judith), Sean T. O'Meallaigh (Prudentius), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Mark Fitzgerald (Warrior), David Shannon (Noble 1), Chris McHallem (Noble 2), Malcolm Douglas (Noble 3), Stephen Rockett (Hvitserk), Luke Shanahan (Ubbe), Rosalie Connerty (Angrboda), Des Carney (Waerferth the Scout), Conor O'Hanlon (Alfred), Huw Parmenter (Roland), Karen Hassan (Therese), Paul Ward (Hairdresser), Philip O'Sullivan (Bishop Edmund), James Quinn Markey (Ivar), Aron Hegarty (Mercian Commander)
• Written By: Michael Hirst
• Directed By: Ciarán Donnelly

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Lothaire Bluteau (Emperor Charles), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), George Blagden (Athelstan), Dianne Doan (Yidu), Moe Dunford (Aethelwulf), Maude Hirst (Helga), Owen Roe (Count Odo), Edvin Endre (Erlendur), Jennie Jacques (Judith), Sean T. O'Meallaigh (Prudentius), Nathan O'Toole (Bjorn), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Huw Parmenter (Roland), Karen Hassan (Therese), Niall Cusack (Abbot Lupus), Des Carney (Waerferth the Scout), Stephen Rockett (Hvitserk), Luke Shanahan (Ubbe), Elijah O'Sullivan (Sigurd)
• Written By: Michael Hirst
• Directed By: Ciarán Donnelly

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Lothaire Bluteau (Emperor Charles), John Kavanagh (The Seer), Peter Franzen (Harald), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), Dianne Doan (Yidu), Moe Dunford (Aethelwulf), Maude Hirst (Helga), Ivan Kaye (King Aelle), Owen Roe (Count Odo), Edvin Endre (Erlendur), Georgia Hirst (Torvi), Jennie Jacques (Judith), Sean T. O'Meallaigh (Prudentius), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Philip O'Sullivan (Bishop Edmund), Maxim Boshell (Ivar's Axe Boy), Stephen Rockett (Hvitserk), Luke Shanahan (Ubbe), Elijah O'Sullivan (Sigurd), James Quinn Markey (Ivar), Niall O'Sioradain (Pagan Priest), Huw Parmenter (Roland), Nabil Massad (Papal Legate), Niall Cusack (Abbot Lupus), Robban Follin (Berserker), Jonathan Gunning (Wessex Fool / Magician), Conor O'Hanlon (Alfred), Karen Hassan (Therese), Tom Hopkins (French Archbishop)
• Written By: Michael Hirst
• Directed By: Helen Shaver

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Ben Robson (Kalf), Lothaire Bluteau (Emperor Charles), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), Dianne Doan (Yidu), Moe Dunford (Aethelwulf), Maude Hirst (Helga), Ivan Kaye (King Aelle), Owen Roe (Count Odo), Edvin Endre (Erlendur), Georgia Hirst (Torvi), Jennie Jacques (Judith), Sean T. O'Meallaigh (Prudentius), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Des Carney (Waerferth the Scout), Conor O'Hanlon (Alfred), Huw Parmenter (Roland), Karen Hassan (Therese), Philip O'Sullivan (Bishop Edmund), Stephen Rockett (Hvitserk), Luke Shanahan (Ubbe), James Quinn Markey (Ivar), Elijah O'Sullivan (Sigurd), Maxim Boshell (Ivar's Axe Boy)
• Written By: Michael Hirst
• Directed By: Helen Shaver

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Lothaire Bluteau (Emperor Charles), John Kavanagh (The Seer), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Kevin Durand (Harbard), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), George Blagden (Athelstan), Dianne Doan (Yidu), Moe Dunford (Aethelwulf), Maude Hirst (Helga), Owen Roe (Count Odo), Edvin Endre (Erlendur), Georgia Hirst (Torvi), Jennie Jacques (Judith), Sean T. O'Meallaigh (Prudentius), Nathan O'Toole (Bjorn), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Stephen Rockett (Hvitserk), Luke Shanahan (Ubbe), Elijah O'Sullivan (Sigurd), James Quinn Markey (Ivar), Conor O'Hanlon (Alfred), Philip O'Sullivan (Bishop Edmund), Huw Parmenter (Roland), Karen Hassan (Therese), Ruby O'Leary (Gyda)
• Written By: Michael Hirst
• Directed By: Ken Girotti

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Kevin Durand (Harbard), Linus Roache (King Ecbert)
• Guest Starring: Dianne Doan (Yidu), Maude Hirst (Helga), Owen Roe (Count Odo), Edvin Endre (Erlendur), Georgia Hirst (Torvi), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Stephen Rockett (Hvitserk), Luke Shanahan (Ubbe), Huw Parmenter (Roland), Elijah O'Sullivan (Sigurd), Philip O'Sullivan (Bishop Edmund), Des Carney (Waerferth the Scout), Ceire O'Donoghue (Third Young Woman), Declan Conlon (Wigstan)
• Written By: Michael Hirst
• Directed By: Ken Girotti

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Lothaire Bluteau (Emperor Charles), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Kevin Durand (Harbard), Linus Roache (King Ecbert)
• Guest Starring: Amy Bailey (Princess Kwenthrith), Dianne Doan (Yidu), Maude Hirst (Helga), Owen Roe (Count Odo), Edvin Endre (Erlendur), Georgia Hirst (Torvi), Jennie Jacques (Judith), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Stephen Rockett (Hvitserk), Luke Shanahan (Ubbe), Huw Parmenter (Roland), Philip O'Sullivan (Bishop Edmund), Des Carney (Waerferth the Scout), James Quinn Markey (Ivar), Elijah O'Sullivan (Sigurd), Karen Hassan (Therese)
• Written By: Michael Hirst
• Directed By: Ken Girotti

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Lothaire Bluteau (Emperor Charles), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Linus Roache (King Ecbert)
• Guest Starring: Moe Dunford (Aethelwulf), John Kavanagh (Pope Leo X), Ivan Kaye (King Aelle), Edvin Endre (Erlendur), Georgia Hirst (Torvi), Jennie Jacques (Judith), Sean T. O'Meallaigh (Prudentius), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Luke Pierucci (Frankish Farmer), Ross McKinney (Frankish Farmer), Gwynne McElveen (Farmer's Wife), Conor O'Hanlon (Alfred), Martha Christie (Roman Prostitute), David Coon (Roman Relic Seller), Dylan McDonough (Papal Secretary), Huw Parmenter (Roland), Karen Hassan (Therese), Philip O'Sullivan (Bishop Edmund), Elijah O'Sullivan (Sigurd), James Quinn Markey (Ivar)
• Written By: Michael Hirst
• Directed By: Jeff Woolnough

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Lothaire Bluteau (Emperor Charles), John Kavanagh (The Seer), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black)
• Guest Starring: Maude Hirst (Helga), Alex Høgh (Ivar), Marco Ilsø (Hvitserk), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe), Georgia Hirst (Torvi), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Tom Hopkins (French Archbishop), Ian Meehan (Frankish Officer), Huw Parmenter (Roland), Karen Hassan (Therese), Adam McNamara (Thorhall)
• Written By: Michael Hirst
• Directed By: Jeff Woolnough

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), John Kavanagh (The Seer), Alex Høgh (Ivar), Marco Ilsø (Hvitserk), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe)
• Guest Starring: Josefin Asplund (Astrid), Maude Hirst (Helga), Ida Marie Nielsen (Margrethe), Georgia Hirst (Torvi)
• Additional Cast in Order of Appearance: Anton Giltrap (Guthrum)
• Written By: Michael Hirst
• Directed By: Daniel Grou

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Alex Høgh (Ivar), Marco Ilsø (Hvitserk), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe)
• Guest Starring: Josefin Asplund (Astrid), Maude Hirst (Helga), Ida Marie Nielsen (Margrethe), Georgia Hirst (Torvi)
• Additional Cast in Order of Appearance: Jack Olohan (Viking Farmer), Anton Giltrap (Guthrum), Tristan Heanue (Blacksmith)
• Written By: Michael Hirst
• Directed By: Daniel Grou

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Moe Dunford (Aethelwulf), Alex Høgh (Ivar), Marco Ilsø (Hvitserk), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe), Linus Roache (King Ecbert)
• Guest Starring: Josefin Asplund (Astrid), Maude Hirst (Helga), Ida Marie Nielsen (Margrethe), Georgia Hirst (Torvi), Jennie Jacques (Judith), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Jack Olohan (Viking Farmer), Liam Clarke (Gudmund), Ed Murphy (Gardar), Amy Hughes (Shield Maiden), Charles Last (William Son of Rollo), Caoimhe Garvin (Young Saxon Girl), Michael Power (Captain of the Guard), Chris McHallem (Saxon Noble), Jack Walsh (Scotus), Paul Booth (Saxon Officer)
• Written By: Michael Hirst
• Directed By: Sarah Harding

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Alyssa Sutherland (Aslaug), John Kavanagh (The Seer), Moe Dunford (Aethelwulf), Alex Høgh (Ivar), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe), Linus Roache (King Ecbert)
• Guest Starring: Josefin Asplund (Astrid), Ida Marie Nielsen (Margrethe), Georgia Hirst (Torvi), Jennie Jacques (Judith)
• Additional Cast in Order of Appearance: Paul Booth (Saxon Officer), Chris McHallem (Saxon Noble), Cameron Hogan (Magnus), Isaac O'Sullivan (Alfred)
• Written By: Michael Hirst
• Directed By: Sarah Harding

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Alyssa Sutherland (Aslaug), John Kavanagh (The Seer), Moe Dunford (Aethelwulf), Alex Høgh (Ivar), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe), Linus Roache (King Ecbert)
• Guest Starring: Josefin Asplund (Astrid), George Blagden (Athelstan), Ivan Kaye (King Aelle), Jennie Jacques (Judith), Nathan O'Toole (Bjorn)
• Additional Cast in Order of Appearance: Isaac O'Sullivan (Alfred), Dave Rowe (Guard), Brendan Conroy (Blind Driver), Ruby O'Leary (Gyda), André Eriksen (Black Cloaked Figure)
• Written By: Michael Hirst
• Directed By: Ciarán Donnelly

• Starring: Travis Fimmel (Ragnar), Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), John Kavanagh (The Seer), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Moe Dunford (Aethelwulf), Alex Høgh (Ivar), Marco Ilsø (Hvitserk), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe), Linus Roache (King Ecbert)
• Guest Starring: Josefin Asplund (Astrid), Maude Hirst (Helga), Ida Marie Nielsen (Margrethe), Georgia Hirst (Torvi), Jennie Jacques (Judith)
• Additional Cast in Order of Appearance: Sinead Gormally (Tanaruz), Lorena Weldon (Bjorn's Victim), André Eriksen (Black Cloaked Figure)
• Written By: Michael Hirst
• Directed By: Ciarán Donnelly

• Starring: Katheryn Winnick (Lagertha), Clive Standen (Rollo), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Alex Høgh (Ivar), Marco Ilsø (Hvitserk), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe), Linus Roache (King Ecbert)
• Guest Starring: Josefin Asplund (Astrid), Maude Hirst (Helga), Ivan Kaye (King Aelle), Ida Marie Nielsen (Margrethe), Georgia Hirst (Torvi), Jennie Jacques (Judith), Morgane Polanski (Princess Gisla)
• Additional Cast in Order of Appearance: Sinead Gormally (Tanaruz), Charlie Kelly (Egil), Tristan Heanue (Blacksmith), Cathy White (Ealswith), Caitlin Scott (Judith's Sister), Charles Last (William Son of Rollo), Isaac O'Sullivan (Alfred), Adam Traynor (First Viking), Donal Gallery (Second Viking), Jack Nolan (Earl Jorgensen), Anton Giltrap (Guthrum)
• Written By: Michael Hirst
• Directed By: Jeff Woolnough

• Starring: Katheryn Winnick (Lagertha), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), John Kavanagh (The Seer), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Moe Dunford (Aethelwulf), Alex Høgh (Ivar), Marco Ilsø (Hvitserk), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe), Linus Roache (King Ecbert)
• Special Guest Star: Josh Donaldson (Hoskuld)
• Guest Starring: Josefin Asplund (Astrid), Maude Hirst (Helga), Ivan Kaye (King Aelle), Ida Marie Nielsen (Margrethe), Georgia Hirst (Torvi), Jennie Jacques (Judith)
• Additional Cast in Order of Appearance: Charlie Kelly (Egil), Anton Giltrap (Guthrum), Sophie Vavasseur (Princess Ellisif), Gary Buckley (Vik), Noni Stapleton (Pagan Priestess), Sinead Gormally (Tanaruz), Jack Nolan (Earl Jorgensen), Niall O'Sioradain (Pagan Priest), David Maine (Royal Servant), Gary Murphy (Bishop Unwan), Cathy White (Ealswith), Caitlin Scott (Judith's Sister)
• Written By: Michael Hirst
• Directed By: Jeff Woolnough

• Starring: Katheryn Winnick (Lagertha), Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Moe Dunford (Aethelwulf), Alex Høgh (Ivar), Marco Ilsø (Hvitserk), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe), Linus Roache (King Ecbert)
• Guest Starring: Josefin Asplund (Astrid), Maude Hirst (Helga), Ida Marie Nielsen (Margrethe), Georgia Hirst (Torvi), Jennie Jacques (Judith)
• Additional Cast in Order of Appearance: Conor Lambert (Viking Trader), Gary Murphy (Bishop Unwan), Rob Walsh (Aelle's Cleric), Philip O'Sullivan (Bishop Edmund), Isaac O'Sullivan (Alfred), Olga Wehrly (Saxon Woman), Lee Hunter (Saxon Scout), Sinead Gormally (Tanaruz), Adam Goodwin (Saxon Noble), Charlie Kelly (Egil), Sophie Vavasseur (Princess Ellisif), Gary Buckley (Vik - Ellisif's Husband), Siobhan Kelly (Egil's Wife), Peter Dillon (Viking Scout)
• Written By: Michael Hirst
• Directed By: Ben Bolt

• Starring: Gustaf Skarsgård (Floki), Alexander Ludwig (Bjorn), Peter Franzen (Harald), Jasper Pääkkönen (Halfdan the Black), Moe Dunford (Aethelwulf), Alex Høgh (Ivar), Marco Ilsø (Hvitserk), David Lindström (Sigurd), Jordan Patrick Smith (Ubbe), Linus Roache (King Ecbert), Jonathan Rhys Meyers (Bishop Heahmund)
• Guest Starring: Maude Hirst (Helga), Jennie Jacques (Judith)
• Additional Cast in Order of Appearance: Philip O'Sullivan (Bishop Edmund), Lee Hunter (Saxon Scout), Adam Goodwin (Saxon Noble), Isaac O'Sullivan (Alfred), Jim Roche (Saxon Scribe), Sinead Gormally (Tanaruz), Tamaryn Payne (Widow Ordlaf)
• Written By: Michael Hirst
• Directed By: Ben Bolt