
Sierra McCormick
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? (2007–2008) 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 the comedy film Ramona and Beezus (2010). She had her breakthrough starring as Olive Doyle on the Disney Channel series A.N.T. Farm (2011–2014).…
Filmography

Supernatural
2005 · 8.3

Curb Your Enthusiasm
2000 · 8.1

Jessie
2011 · 8.0

Boston Legal
2004 · 7.9

Monk
2002 · 7.9

American Horror Stories
2021 · 7.7

NCIS
2003 · 7.6

CSI: Crime Scene Investigation
2000 · 7.6

Medium
2005 · 7.5

A.N.T. Farm
2011 · 7.2

Hannah Montana
2006 · 7.1

The Last Stop in Yuma County
2024 · 6.9

All Good Things
2019 · 6.9

Ramona and Beezus
2010 · 6.6

After All
2025 · 6.6

Sorority Nightmare
2016 · 6.6

The Vast of Night
2019 · 6.6

Christmas in the Heartland
2017 · 6.1

Killing Mary Sue
2025 · 6.1

Spooky Buddies
2011 · 6.0

VFW
2019 · 5.8

The Honor List
2018 · 5.8

A Nanny for Christmas
2010 · 5.6

Land of the Lost
2009 · 5.5

Romantically Challenged
2010 · 5.2

We Need to Do Something
2021 · 5.2

The Dog Who Saved Christmas
2009 · 5.0

Edge of Everything
2023 · 5.0

The Neighborhood Nightmare
2018 · 4.8

Some Kind of Hate
2015 · 4.7

Pretty Little Stalker
2018 · 4.6

The Nana Project
2023 · 4.5

Big Baby
2025 · 4.3

Exploited
2022 · 4.2

Last Chance Motel
2026 · 3.6

Camp
2023 · 3.2
Are You Smarter Than a 5th Grader?
2007 · 1.0

Sigil
— · 0.0
Burnouts
— · 0.0

Acting Out
2024 · 0.0
GUM
— · 0.0

I Don't Want to Drink Your Blood Anymore
2026 · 0.0
Building Blocks
— · 0.0
Dead at 27
— · 0.0