Margo Martindale has been credited as
Actor 15
| Uncle Frank | Completed | TBA |
| The Best Thief in the World | Completed | TBA |
| Lazy Susan | 2020 | |
| Blow The Man Down | 2020 | |
| The Kitchen | 2019 | |
| Downsizing | 2017 | |
| Sophie and the Rising Sun | 2017 | |
| The Hollars | 2016 | |
| Mother's Day ... Flo | 2016 | |
| Heaven Is For Real | 2014 | |
| August: Osage County ... Mattie Fae Aiken | 2013 | |
| Secretariat ... Elizabeth Hamm | 2010 | |
| The Winning Season | 2010 | |
| It's All About Love | 2004 | |
| The Human Stain | 2003 |
Limited credits available; non-exhaustive filmography.
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