Benjamin Thomas Barnes (born 20 August 1981) is an English actor and singer. He is best known for his roles as Prince Caspian in The Chronicles of Narnia film series (2008–2010), Logan Delos in the HBO science fiction series Westworld (2016–2020), Billy Russo/Jigsaw in the Marvel series The Punisher (2017–2019), The Darkling in the Netflix series Shadow and Bone (2021–2023), and Tim Jamieson in the MGM+ supernatural series The Institute (2025).
He also played young Dunstan Thorn in Stardust (2007), the title role in Dorian Gray (2009), Neil McCormick in Killing Bono (2011), Alejandro in The Big Wedding (2013), Tom Ward in Seventh Son (2014), Samuel Adams in Sons of Liberty (2015) and Benjamin Greene in Gold Digger (2019).
Also known for his contributions to the soundtracks of films in which he appeared, Barnes released his debut single "11:11" in September 2021. This preceded the release of his debut extended play, Songs For You. His debut album, Where The Light Gets In, was released on January 10, 2025.
Barnes was born on 20 August 1981 in southwest London to Patricia Becker, a relationship psychotherapist, and Thomas Barnes, a psychiatrist and professor. He has a younger brother, Jack. Barnes cites his mother's Jewish South African childhood, his father's scientific education, and his attendance at what he felt was a "vaguely Christian" school where he "liked the hymns" as formative influences.
Barnes was educated at two independent schools for boys: Homefield Preparatory School in Sutton and King's College School in Wimbledon. In King's, he sang in choirs and played percussions (drums and piano) in jazz orchestras and concert bands. In 1997 he began his career in musical theatre by joining the National Youth Music Theatre where, at age sixteen, he gave his first performance as a drummer in the West End musical adaptation of Bugsy Malone. Prior to university, he spent two years singing, television presenting, and working with entertainment svengali Simon Fuller to open a jazz club and release an album, both of which did not materialise.
Barnes then studied English literature and drama at Kingston University, appearing and directing in productions such as Don Juan (alongside Katrina Drovandi as the lead), The Golden Age, Exposure and The Zoo Story. He won the English Prize for writing essays on themes from Harry Potter and The Hobbit. While working at the theatre on intense acts such as The Ragged Child, The Dreaming, Loving Ophelia, Sex, Chips & Rock n' Roll, he briefly joined the boyband Hyrise, who performed in Eurovision: Making Your Mind Up, to find the UK's entry for the 2004 Eurovision Song Contest, with 'Leading Me On'. Graduating in 2004 with a BA (Hons) in Drama with English Literature, he was the university's first drama student to achieve first-class honours. In 2008, he was inducted in the university's Wall of Fame, the youngest to be featured among more than twenty accomplished alumni.
Barnes began working on television in 2006, including a guest appearance on the UK series Doctors. That same year, he joined the ensemble cast of a West End production of The History Boys, in which he starred and received acclaim as the sexually provocative Dakin.
Barnes made his feature film debut as young Dunstan Thorn in Stardust (2007), directed by Matthew Vaughn and based on Neil Gaiman's novel of the same name. He starred as a Russian hoodlum named Cobakka in Suzie Halewood's Bigga than Ben (2008).
In June 2008, Barnes gained recognition for his role as Prince Caspian in The Chronicles of Narnia: Prince Caspian, directed by Andrew Adamson. Adamson described the film as "a coming of age and, to some degree, a loss of innocence story, with Caspian starting out quite naïve, then craving revenge and finally letting go of the vengeance." While many readers interpret Caspian as a child, a passage in the novel mentions his age to be near that of Peter's, so an older actor was sought to match William Moseley. Barnes was cast two and a half weeks after meeting with the filmmakers, and fitted well into the surrogate family of Adamson and the four actors playing the Pevensies. He spent two months in New Zealand riding and stunt training in preparation. His Mediterranean accent in the film was inspired in part by Mandy Patinkin's performance as Inigo Montoya in The Princess Bride. Barnes also voiced his character in the video game The Chronicles of Narnia: Prince Caspian. His portrayal earned him nominations from the 2008 National Movie Awards for Best Male Performance, the 2008 Teen Choice Awards for Choice Movie Breakout Male, and the 2009 MTV Movie Awards for Best Breakthrough Male.
In November 2008, Barnes starred in the role of John Whittaker opposite Jessica Biel and Colin Firth in Stephan Elliott's romantic comedy Easy Virtue, based on Noël Coward's play of the same name. The score contained Coward and jazz-age songs, three of which were sung by Barnes. He then starred as the title character in Dorian Gray, a film adaptation of Oscar Wilde's novel, directed by Oliver Parker and released in September 2009. In the psychological thriller Locked In, directed by Suri Krishnamma and released in September 2010, he played Josh, an American father whose daughter seems to be in a coma due to a car accident.
Barnes reprised his role as King Caspian in The Chronicles of Narnia: The Voyage of the Dawn Treader, the third instalment in the film series. Directed by Michael Apted and filmed in Australia, it premiered in November 2010 at a Royal Film Performance in London and had a theatrical release in December. He received a nomination at the 2011 National Movie Awards for Performance of the Year.
Barnes returned to the West End stage in London with a starring role as World War I soldier Stephen Wraysford in Birdsong, a drama based on Sebastian Faulks's novel of the same title. The play, directed by Trevor Nunn and adapted by Rachel Wagstaff, opened on 28 September 2010 and ran through 15 January 2011.
In April 2011, he played Neil McCormick in Killing Bono, a comedy based on McCormick's memoir I Was Bono's Doppelgänger, in which McCormick recounts his youth in Ireland as an aspiring rock star who is overshadowed by his friend Bono, the lead singer of U2. The Hollywood Reporter says Barnes and his co-star Robert Sheehan "convincingly portray young talents who were in the right place at the right time but made the wrong moves".
In September 2012, Barnes appeared in The Words as a young American soldier and literary genius stationed in France during the end of World War II, who fell in love with a French waitress and whose manuscript gets lost in post-war era. Though his performance was physical with little to no dialogue, Screen Rant described his character's story as "easily the most fascinating element of the film" and called his performance "solid" which "beautifully captures the many profound emotions — love, loss, and regret — that his character experienced."
He then played Alejandro in The Big Wedding, a remake of the original 2006 French film Mon frère se marie (My brother is getting married) released in April 2013.
In December 2014, Barnes starred as Nick Tortano, an associate of a local mafia boss, in the modern day crime drama By the Gun. In the same month was the release of the fantasy film Seventh Son in which he played Tom Ward. Directed by Sergei Bodrov, it is based on the novel The Spook's Apprentice by Joseph Delaney.
In January 2015, Barnes portrayed Sam Adams, a tax collector for the British government, in History Channel's three-part miniseries Sons of Liberty. He also starred as guitarist and singer Ryan Brenner, reuniting with Katherine Heigl in the romantic drama Jackie & Ryan, released in US cinemas in July 2015. Variety wrote that with "his male-model features shamelessly lapped up by the camera from the opening frame onwards, [Barnes] is as limber and likeable as he's yet appeared on screen, his native accent convincingly hidden behind a middle-American husk." Barnes would later regard this character as his most favourite to portray, "I enjoyed all the music from that film and found Ryan a soulful character to embody, which made me try to re-evaluate how complicated life can get."