Diarmaid Murtagh is an Irish actor. He portrayed Leif in the 2013 historical drama television series Vikings, Dimitri in Dracula Untold (2014) and Captain Harpen in The Monuments Men (2014). He first appeared in the 2007 Irish soap opera Ros na Rún. His debut film role was as Captain Harpen in the George Clooney's 2014 war film The Monuments Men. Murtagh played convict Frank Mitchell in the 2019 film The Krays' Mad Axeman.
He is currently starring in Troy: Fall of a City as Hermes, messenger of Olympus. He is currently featured as “Connor” in the Netflix sci fi drama The one.
William Tell
Master Builder
2025
Bad Boy Buck
Buck
2022
Against the Ice
Poulsen
2022
Uncharted
Police Officer
2022
The Tourist
Donal · (6 episodes)
2022
Grace
Vic · (1 episode)
2021
The One
Connor Martin · (8 episodes)
2021
Bloodlands
Robert Dardis · (3 episodes)
2021
Bruno
Daniel
2019
Robert the Bruce
James Douglas
2019
Chernobyl
Zukauskas · (1 episode)
2019
The Krays' Mad Axeman
Frank Mitchell
2019
The Protector
Jake Sharp
2019
A Christmas in Royal Fashion
Prince Patrick
2018
Age of Summer
Tony
2018
Renegades
Kurt Duffy
2017
The Girlfriend Experience
Player 97 · (1 episode)
2016
Quantico
Eamon Devlin · (1 episode)
2015
Sons of Liberty
Tim Kelly · (3 episodes)
2015
Dracula Untold
Dimitru
2014
Good People
Marshall
2014
Outlander
William 'Buck' MacKenzie · (6 episodes)
2014
Quirke
McCoy · (1 episode)
2014
The Monuments Men
Captain Harpen
2014
Vikings
Leif · (6 episodes)
2013
Camelot
Brastias · (10 episodes)
2011
The Roaring Twenties
Kevin · (2 episodes)
2008
Seacht
Brian · (8 episodes)
2008