Kieran John Bew (born 18 August 1980) is an English actor, known for portraying Hugh Hammer in House of the Dragon , 'Big' Bill O’Hara in Warrior, Alfonso, Duke of Calabria in Da Vinci's Demons, Hans Christian Andersen: My Life as a Fairytale, and Gary Parr in Jimmy McGovern's BAFTA Award-winning The Street alongside Matt Smith.
In 1999 Bew worked as fight choreographer and captain for Mark Rylance's productions of Hamlet and Two Noble Kinsmen at Shakespeare's Globe Theatre in London.
He has also appeared in two Hallmark television films, Brush with Fate, alongside Ellen Burstyn and Kelly Macdonald, and Hans Christian Andersen, with Hugh Bonneville and James Fox.
In 2004, he played a football hooligan called Ike in the popular film Green Street alongside Elijah Wood and Charlie Hunnam.
Since 2019 Bew has played a major role in the HBO Max series "Warrior" as an Irish policeman in the throes of conflict in the early days of San Francisco's Chinatown.