Keir Gilchrist

Biography

Keir David Peters Gilchrist (born 28 September 1992) is a Canadian actor and musician. On television, he portrayed Marshall Gregson on the Showtime comedy-drama United States of Tara (2009–2011) and headlined the Netflix comedy-drama Atypical (2017–2021). His film roles include the comedy-drama It's Kind of a Funny Story (2010) and the supernatural horror It Follows (2014). Outside of his acting career, Gilchrist is the vocalist of grindcore band Whelm and death metal band Phalanx.

Known for

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Freaky Tales

2025 ⭐ 6.3

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Katie Says Goodbye

2018 ⭐ 6.5

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Pisces

2017 ⭐ 9.0

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The Good Neighbor

2016 ⭐ 6.2

Career timeline

2026

By Design

Gary · 2026

⭐ 5.8

2025

Freaky Tales

Josh · 2025

⭐ 6.3

2024

Running on Empty

Mort · 2024

⭐ 5.8

DEEP CUT

Director · 2024

2023

The Featherweight

Billy Papaleo Jr. · 2023

⭐ 5.1

2021

An Intrusion

Layne · 2021

⭐ 5.8

Flashback

Andre · 2021

⭐ 6.0

Castle in the Ground

Polo Boy · 2021

⭐ 4.3

2018

Katie Says Goodbye

Matty · 2018

⭐ 6.5

2017

Pisces Notable

Alex · 2017

⭐ 9.0

Heartthrob

Henry Sinclair · 2017

⭐ 5.2

2016

The Good Neighbor

Sean · 2016

⭐ 6.2

The Elvis Room

Kurt · 2016

⭐ 4.7

2015

Tales of Halloween

The Stranger · 2015

⭐ 5.7

Len and Company

William · 2015

⭐ 5.5

The Stanford Prison Experiment

John Lovett · 2015

⭐ 6.8

2013

Seasick Sailor

Penna · 2013

2011

Matty Hanson and the Invisibility Ray

Matty Hanson · 2011

⭐ 4.5

Just Peck

Michael Peck · 2011

⭐ 5.2

2010

It's Kind of a Funny Story Notable

Craig Gilner · 2010

⭐ 6.9

2009

Hungry Hills

Snit · 2009

⭐ 6.2

2008

The Rocker

Moby Type Kid · 2008

⭐ 6.0

2007

Dead Silence Notable

Young Henry · 2007

⭐ 6.5

2006

A Lobster Tale

Mike Stanton · 2006

⭐ 6.8

2005

Saint Ralph Notable

Kid Collins · 2005

⭐ 7.0

Horsie's Retreat Notable

Louie (uncredited) · 2005

⭐ 10.0

2004

Samantha: An American Girl Holiday

Factory Boy · 2004

⭐ 6.5

The Right Way

Young David · 2004

⭐ 4.7

Frequently appears with

Jay Ellis

Sleepy Floyd

Pedro Pascal

Clint

Ben Mendelsohn

The Guy

Normani

Entice

Dominique Thorne

Barbie

Olivia Cooke

Katie

Mireille Enos

Tracey

Christopher Abbott

Bruno

Jim Belushi

Bear

Mary Steenburgen

Maybelle

Full filmography

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By Design

2026 ⭐ 5.8

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Freaky Tales

2025 ⭐ 6.3

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Running on Empty

2024 ⭐ 5.8

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DEEP CUT

2024

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The Featherweight

2023 ⭐ 5.1

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An Intrusion

2021 ⭐ 5.8

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Flashback

2021 ⭐ 6.0

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Castle in the Ground

2021 ⭐ 4.3

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Katie Says Goodbye

2018 ⭐ 6.5

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Pisces

2017 ⭐ 9.0

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Heartthrob

2017 ⭐ 5.2

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The Good Neighbor

2016 ⭐ 6.2

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The Elvis Room

2016 ⭐ 4.7

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Tales of Halloween

2015 ⭐ 5.7

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Len and Company

2015 ⭐ 5.5

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The Stanford Prison Experiment

2015 ⭐ 6.8

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The Heyday of the Insensitive Bastards

2015 ⭐ 4.8

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Share

2015 ⭐ 7.0

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It Follows

2015 ⭐ 6.6

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Dark Summer

2015 ⭐ 4.4