Luke John Roberts (born 5 October 1977) is an English actor. He is known for his roles as Joseph Byrne in the BBC One medical drama Holby City (2006–2011, 2019–2022), Woodes Rogers in the Starz series Black Sails (2016–2017), and Eric Beaumont in the Global drama Ransom (2017–2019).
Roberts first gained prominence through his roles as Ryan Samson in the short-lived third series of the soap opera Crossroads (2003) and Captain Dan Pieterson in the Sky1 drama Mile High (2004–2005). In 2016, Roberts appeared in an episode of the HBO series Game of Thrones during the sixth season portraying Ser Arthur Dayne.