Sean Harris (born 1965/1966) is an English actor and writer. He played Ian Curtis in 24 Hour Party People (2002), Micheletto Corella in The Borgias (2011–2013), Fifield in Prometheus (2012), Solomon Lane in Mission: Impossible – Rogue Nation (2015) and Mission: Impossible – Fallout (2018), Philip in Possum (2018), William Gascoigne in The King (2019) and Henry Peter Teague / Peter Morley in The Stranger (2022).

Harris won a British Academy Television Award for Best Actor for his role in the miniseries Southcliffe (2013) and received three consecutive nominations for the BIFA Award for Best Supporting Actor.

Early life and education
Harris was born just outside Woodbridge, Suffolk, and grew up in Lowestoft, Suffolk. He attended Denes High School, now the Ormiston Denes Academy in Lowestoft, Suffolk. At 23, he moved to London to train at the Drama Centre London from 1989 to 1992.