Katherine O'Sullivan
- Luogo di nascita:
- Dublin, Ireland:
 | An Chathair Mhór (2024) Brida |
 | Hungry Hearts (2015) Psychic (uncredited) |
 | Birdman or (The Unexpected Virtue of Ignorance) (2014) Costume Assistant |
 | The Old Man and the Seymour (2009) Olga |
 | The Blood Shed (2007) Leslie |
 | Shortcut to Happiness (2003) Charlotte Bronte (court scene) |
 | The Emperor's Club (2002) The Nun |
 | I'll Bury You Tomorrow (2002) |
 | Curtain Call (1998) Guest at Ball (uncredited) |