20th-century Irish actresses

Mischa Barton (born 24 January 1986) is a British-Irish-American film, television, and stage actress. She began her career on the stage, appearing in Tony Kushner's Slavs! and took the lead in James Lapine's Twelve Dreams at New York City's Lincoln Center. She made her screen debut with a guest appearance on the American soap opera All My Children (1996), and voicing a character on the Nickelodeon cartoon series KaBlam! (1996–97). Her first major film role was as the protagonist of Lawn Dogs (1997), a drama co-starring Sam Rockwell. She appeared in major pictures such as the romantic comedy Notting Hill (1999) and M. Night Shyamalan's psychological thriller The Sixth Sense (1999). She also starred in the indie crime drama Pups (1999).

Sarah Bolger (born 28 February 1991) is an Irish actress. She starred in the films In America (2003), Stormbreaker (2006), The Spiderwick Chronicles (2008), The Moth Diaries (2011), The Lazarus Effect (2015), and Emelie (2015). On television, she portrayed Princess Mary Tudor in The Tudors (2008–2010), for which she won an IFTA award, and Princess Aurora in Once Upon a Time (2012–2015). Bolger also appeared on the series Into the Badlands (2015–2017) and stars on Mayans M.C. (2018–present).

Maureen O'Hara (née FitzSimons; 17 August 1920 – 24 October 2015) was a native Irish and naturalized American actress and singer, who became successful in Hollywood from the 1940s through to the 1960s. She was a natural redhead who was known for playing passionate but sensible heroines, often in Westerns and adventure films. She worked with director John Ford and long-time friend John Wayne on numerous projects.

Andrea Jane Corr MBE (born 17 May 1974) is an Irish singer, songwriter, musician, author and actress. Corr debuted in 1990 as the lead singer of the Celtic folk rock and pop rock group The Corrs along with her three elder siblings Caroline, Sharon and Jim. Aside from singing lead vocals, Corr plays the tin whistle, the ukulele and the piano.

Alison Doody (born 11 November 1966) is an Irish actress and model. After making her feature film debut as Bond girl Jenny Flex in A View to a Kill (1985), she went on to play Elsa Schneider in Indiana Jones and the Last Crusade (1989). Other roles include Siobhan Donavan in A Prayer for the Dying (1987), Charlotte in Taffin (1988), Rebecca Flannery in Major League II (1994) and Catherine Buxton in RRR (2022). She also played Pam in Beaver Falls (2011–2012).

Maureen Paula O'Sullivan (17 May 1911 – 23 June 1998) was an Irish-American actress. She was best known for playing Jane Parker in the Tarzan series of films during the era of Johnny Weissmuller. In 2020, she was listed at number 8 on The Irish Times list of Ireland's greatest film actors. She was also the mother of actress Mia Farrow. When told Frank Sinatra wanted to marry Mia, she famously remarked "At his age, he should marry me."

Cindy O'Callaghan is an Irish-born British former actress and psychologist. Her acting career began in her adolescence, when she was chosen to play the part of Carrie Rawlins in the Disney feature film Bedknobs and Broomsticks in 1971. She has appeared in a wide range of television programmes and films since, including BBC's EastEnders, where she played Andrea Price for several stints in the 1990s. Her last credited role was in 2001, and she has since given up acting to become a child psychologist.

Audrey Dalton (born 21 January 1934) is an Irish television and film actress.

Maria Doyle Kennedy (born 25 September 1964) is an Irish singer, songwriter, and actress. With a singing and acting career that has spanned more than 30 years, she has established herself as one of Ireland's most prolific artists and entertainers. As an actress, she is best known for her extensive television roles as Patsy in Father Ted (1998), Catherine of Aragon in The Tudors (2007–2010), Vera Bates in Downton Abbey (2011), Siobhán Sadler in Orphan Black (2013–2017), and Jocasta Cameron in Outlander (2018–present).

Elaine Cassidy (born 31 December 1979) is an Irish actress. She is known for playing the lead character Abby Mills in the American television series Harper's Island for CBS, Felicia in Felicia's Journey, Runt in Disco Pigs, Lydia in The Others, Amy Harris in The Ghost Squad, Katherine Glendenning in The Paradise, and DC Dinah Kowalska in No Offence.