Dermot O'Neill
- Acting
Known for
Filmography
- Mrs. Brown's Boys New Year Special – New Year, New Mammy · Grandad Brown
- All Round to Mrs. Brown's · Grandad Brown, Granddad Brown
- Mrs Brown's Boys Live Episode: Mammy Sutra · Grandad Brown
- Mrs. Brown's Boys D'Movie · Grandad Brown
- Mrs. Brown's Boys Live Tour: Mrs. Brown Rides Again · Grandad Brown
- Mrs. Brown's Boys Live Tour: Good Mourning Mrs. Brown · Grandad
- Mrs Brown's Boys · Grandad Brown
- Mystics · Bosco's Gang Member
- Spin the Bottle · One Legged Beggar
- Brendan O'Carroll: How's Your Jolly Roger?
- Mrs. Brown's Boys: Crackin' Christmas · Grandpa Brown