David Mark Morrissey (born 21 June 1964) is an English actor and director. He grew up in the Kensington and Knotty Ash areas of Liverpool. Learning to act at the Everyman Youth Theatre, alongside Ian Hart, Mark and Stephen McGann, and Cathy Tyson. At age 18, he and Hart were cast in the television series One Summer (1983), which won them recognition throughout the country. After making One Summer, Morrissey attended the Royal Academy of Dramatic Art (RADA) before acting with the Royal Shakespeare Company and the National Theatre.

Throughout the 1990s, he often portrayed policemen and soldiers, though took other defining roles such as Bradley Headstone in Our Mutual Friend (1998) and Christopher Finzi in Hilary and Jackie (1998). More film parts followed, including roles in Some Voices (2000) and Captain Corelli's Mandolin (2001), before he played the critically acclaimed roles of Stephen Collins in State of Play (2003) and Gordon Brown in The Deal (2003). The former won him a nomination at the British Academy Television Awards and the latter a Best Actor award at the Royal Television Society Awards. His film roles have not always been acclaimed; his appearance as the male lead in Basic Instinct 2 (2006) was widely criticised, and The Reaping (2007) bombed at the box office. Since then, he has had leading roles in Sense and Sensibility (2008), Red Riding (2009) and Five Days (2010), acted in the films Nowhere Boy (2009) and Centurion (2010), and produced and starred in the crime drama Thorne (2010). Returning to the stage in 2008, he did a run of Neil LaBute's In a Dark Dark House and the title role in the Liverpool Everyman's production of Macbeth in 2011.