Brendan O'Carroll is an Irish actor, comedian, director, producer, and writer. He is best known for portraying the foul-mouthed matriarch Agnes Brown on stage and in the BBC and RTÉ television sitcom Mrs. Brown's Boys. In 2015, O'Carroll was awarded the Irish Film and Television Academy Lifetime Achievement Award for his contribution to Irish television.

O'Carroll is a BAFTA-winning writer, producer, comedian, author, actor, and director. A popular comedian in Ireland since the early 1990s, O'Carroll has written seven novels, including The Mammy (1994), The Chisellers (1995), The Granny (1996), The Scrapper (originally published as "Sparrows Trap", 1997), and The Young Wan (2003); a number of these have been translated into 12 languages and have been bestsellers worldwide. He has also written four films and nine comedy shows, including The Course (1995), Grandad's Sure Lilly's Still Alive (1997), The Last Wedding (1999), Mourning Mrs. Brown (2000).