Barry is a graduate of The Samuel Beckett Center for performing arts at Trinity College, Dublin. His first lead role was in a BBC Film called Screen Two: O Mary This London (1994).
In 1997, he played Tommy Ryan in the film Titanic
He has two daughters: Freya Barry, born in 2005, and Nova Barry, born in 2007. Barry is a Manchester United fan. He is a keen marathon Runner.
In 2014, Jason played the role Edgar Willcox in 'United Passions, a film detailing the history of FIFA. Its release is set to coincide with beginning of the 2014 World Cup in Brazil.
In 2016, he performed voice over and motion capture work as Corporal Sean Brooks in Call of Duty: Infinite Warfare, a first-person shooter video game developed by Infinity Ward and published by Activision.
