Fiona O'Carroll is an Irish actress and a cast-member of the BBC/RTÉ sitcom, Mrs. Brown's Boys.
Later that year, O'Carroll starred as Gretchen Ackerman in the touring production of Coppers the Musical.
In 2023, O'Carroll starred in the award-winning Jason Branagan short film Picture Day.
Later in 2023, O'Carroll played the part of Linda in Western Front Studios' short film They Can't Know About Me, directed by Michael Carolan.
O'Carroll married her Mrs. Brown's Boys co-star, Martin Delany, who is originally from Australia, on 18 May 2006.