Mrs. Brown's Boys is a television sitcom created by and starring Brendan O'Carroll and produced in the United Kingdom by BBC and BBC Studios in partnership with BOC-PIX and Irish broadcaster RTÉ. The series stars O'Carroll as Agnes Brown, with several of O'Carroll's close friends and family members making up the rest of the cast. The show adopts an informal production style often breaking the fourth wall; material that would normally be outtakes are intentionally left in broadcast episodes, along with intentional tomfoolery, mostly instigated by O'Carroll.

Mrs. Brown's Boys was developed from O'Carroll's works going back to the early 1990s. The character, Agnes Browne, first appeared in stage plays, radio plays, books, and straight-to-DVD films. For the sitcom, the spelling of Agnes' surname was shortened from Browne to Brown. A stage show has continued to run, and during February and March 2014 it toured Australia. A feature film, Mrs. Brown's Boys D'Movie, was released on 27 June 2014. In late 2023, the show returned for a fourth series.

The show has received poor reviews by critics and received unfavourable comparisons to Father Ted. Despite this, it became a ratings success in both Ireland, where it is set, and the United Kingdom, where it is recorded. It also received high ratings in Australia, New Zealand and Canada. The show has won numerous industry awards. Despite a limited number of episodes, the show has returned annually for Christmas and New Year's specials since 2013.