SM
Movies & Shows on Plex
Known For
Sierra McCormick Filmography
| 2025 | After All · as Monica |
| 2025 | Killing Mary Sue · as Mary Sue |
| 2023 | The Last Stop in Yuma County · as Sybil |
| 2023 | Camp · as Lily |
| 2023 | The Nana Project · as Sarah |
| 2023 | Edge of Everything · as Abby |
| 2022 | |
| 2021 | We Need to Do Something · as Melissa |
| 2021 | American Horror Stories (TV Series) · as Scarlett Winslow |
| 2019 | VFW · as Lizard |
| 2019 | Who Stole My Daughter? · as Katie Sullivan |
| 2019 | All Good Things · as Bailey |
| 2019 | The Vast of Night · as Fay Crocker |
| 2018 | The Danger of Positive Thinking · as Bridget |
| 2018 | Christmas in the Heartland · as Kara Gentry |
| 2018 | The Neighborhood Watch · as Allie |
| 2018 | The Neighborhood Nightmare · as Allie |
| 2018 | The Honor List · as Charlotte |
| 2016 | Twisted Sisters · as Sarah |
| 2015 | Some Kind of Hate · as Moira |
| 2011 | Jessie (TV Series) · as Connie Thompson |
| 2011 | Spooky Buddies · as Alice |
| 2011 | A.N.T. Farm (TV Series) · as Olive Doyle |
| 2010 | A Nanny for Christmas · as Jackie Ryland |
| 2010 | Ramona and Beezus · as Susan |
| 2010 | Romantically Challenged (TV Series) · as Scout Thomas |
| 2009 | The Dog Who Saved Christmas · as Kara Bannister |
| 2009 | Land of the Lost · as Tar Pits Kid |
| 2007 | Are You Smarter Than a 5th Grader? (TV Series) |
| 2006 | 'Til Death (TV Series) · as Kid |
| 2006 | Disney Channel Games (TV Series) · as Contestant |
| 2006 | Hannah Montana (TV Series) · as Gillian |
| 2005 | Criminal Minds (TV Series) · as Lynn Robillard |
| 2005 | Supernatural (TV Series) · as Lilith |
| 2005 | Medium (TV Series) · as Adolescent Allison |
| 2004 | Boston Legal (TV Series) · as Daniella |
| 2003 | The Ellen DeGeneres Show (TV Series) · as Class From |
| 2003 | NCIS (TV Series) · as Sally Clark |
| 2002 | Monk (TV Series) · as Anne Marie |
| 2000 | Curb Your Enthusiasm (TV Series) · as Emma |
| 2000 | CSI: Crime Scene Investigation (TV Series) · as Gracie Layman |
| 2017 | Hollywood First Look Features (TV Series) · as Self |
| 2010 | Piper's QUICK Picks (TV Series) · as Self - Guest |
| 2008 | Piper's Picks TV (TV Series) · as Self - Guest |
| 2007 | Are You Smarter Than a 5th Grader? (TV Series) · as Self - Sierra |
| 2006 | Talkshow with Spike Feresten (TV Series) · as Self |
| 1981 | Entertainment Tonight (TV Series) · as Self |
| 2021 | We Need to Do Something · as Co-Executive Producer |