Mary Margaret O'Hara
- Known for
- Acting
Filmography

Measures for a Funeral 2024
as Voice of Kathleen Parlow

Museum Hours 2012
as Anne, Additional Dialogue

Splice 2010
Vocals
- A Christmas Carl
A Christmas Carl 2008
Music
- Black Widow
Black Widow 2005
as Elizabeth Peyton
- Squeezebox
Squeezebox 2003
as Vivienne

Stormy Weather: The Music of Harold Arlen 2002
as Herself

Apartment Hunting 2000
as Hellen, Original Music Composer

September Songs: The Music of Kurt Weill 1994
as Self
- The Events Leading Up to My Death
The Events Leading Up to My Death 1991
as Rita, Music

Candy Mountain 1988
as Darlene

The Last Polka 1985
as Lemon Twin

The Hunter 1980
as Child on Subway (as Margaret O'Hara)
Credits from TMDB.