Saoirse Una Ronan ( SUR-shə; born 12 April 1994) is an Irish and American actress. She is the recipient of several accolades, including a Golden Globe Award, and has been nominated for three Academy Awards and four British Academy Film Awards.
Ronan made her acting debut with the Irish medical drama series The Clinic in 2003 and made her film debut with a supporting role in the romantic comedy I Could Never Be Your Woman in 2007. Her breakthrough came with the part of a precocious teenager in Atonement (2007), for which she was nominated for the Academy Award for Best Supporting Actress. Ronan followed this with the starring roles of a murdered girl seeking closure in The Lovely Bones (2009), a teenaged assassin in Hanna (2011), a vampire in Byzantium (2012), and a baker in The Grand Budapest Hotel (2014). Ronan made her stage debut as Abigail Williams in the 2016 Broadway revival of The Crucible.
Ronan received critical acclaim for playing a homesick Irish girl in 1950s New York in the romantic drama Brooklyn (2015) and the titular role of a high school senior in Greta Gerwig's coming-of-age film Lady Bird (2017). She won the Golden Globe Award for Best Actress for the latter and earned nominations for the Academy Award for Best Actress for both films.