Sierra McCormick
Acting
42
Acting Credits
Biography
Sierra McCormick (born October 28, 1997) is an American actress. She first became known for participating in the game show Are You Smarter Than a 5th Grader? (2007β2008) before making her acting debut with a recurring role as Lilith on the television series Supernatural (2008). She also starred as Scout Thomas on the comedy television series Romantically Challenged (2010), played Alice in the direct-to-DVD film Spooky Buddies (2011) for which she won a Young Artist Award, and Susan Kushner in th...
Known For
Filmography
Last Chance Motel
2026
Killing Mary Sue
2025
as Mary Sue
After All
2025
as Monica
Big Baby
2025
The Last Stop in Yuma County
2024
as Sybil
Acting Out
2024
as Sierra
Edge of Everything
2023
as Abby
The Nana Project
2023
as Sarah
Camp
2023
as Lily
Exploited
2022
as Chloe
We Need to Do Something
2021
as Melissa
American Horror Stories
2021
as Scarlett Winslow
The Vast of Night
2019
as Fay Crocker
All Good Things
2019
as Bailey
VFW
2019
as Lizard
Who Stole My Daughter?
2019
as Katie Sullivan
Seduced by My Neighbor
2018
as Allie
The Honor List
2018
as Charlotte
Pretty Little Stalker
2018
as Bridget
The Neighborhood Nightmare
2018
as Allie
Christmas in the Heartland
2017
as Kara Gentry
Sorority Nightmare
2016
as Sarah
Some Kind of Hate
2015
as Moira
Spooky Buddies
2011
as Alice
A.N.T. Farm
2011
as Olive Doyle
Disney's Friends for Change Games
2011
as Self
Jessie
2011
as Connie Thompson
A Nanny for Christmas
2010
as Jackie Ryland
Ramona and Beezus
2010
as Susan
Romantically Challenged
2010
as Scout Thomas
The Dog Who Saved Christmas
2009
as Kara Bannister
Land of the Lost
2009
as Tar Pits Kid
Are You Smarter Than a 5th Grader?
2007
Hannah Montana
2006
as Gillian
Medium
2005
as Adolescent Allison
Supernatural
2005
as Lilith
Supernatural
2005
as Zoey
Boston Legal
2004
as Daniella
NCIS
2003
as Sally Clark
Monk
2002
as Anne Marie
CSI: Crime Scene Investigation
2000
as Gracie Layman
Curb Your Enthusiasm
2000
as Emma