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Keir Gilchrist

Keir Gilchrist

  • Child actor
  • Teen actor

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.

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Freaky Tales

Freaky Tales

2025

as Josh

By Design

By Design

2025

as Gary

Running on Empty

Running on Empty

2024

as Mort

The Featherweight

The Featherweight

2023

as Billy Papaleo Jr.

Love & Death

Love & Death

2023

as Ron Adams

An Intrusion

An Intrusion

2021

as Layne

Castle in the Ground

Castle in the Ground

2021

as Polo Boy

Flashback

Flashback

2020

as Andre

Katie Says Goodbye

Katie Says Goodbye

2018

as Matty

Pisces

Pisces

2017

as Alex

Heartthrob

Heartthrob

2017

as Henry Sinclair

Atypical

Atypical

2017

as Sam Gardner

Room 104

Room 104

2017

as Alex

Los

Los

2017

as Left

The Good Neighbor

The Good Neighbor

2016

as Sean

The Elvis Room

The Elvis Room

2016

as Kurt

Tales of Halloween

Tales of Halloween

2015

as The Stranger

Len and Company

Len and Company

2015

as William

The Stanford Prison Experiment

The Stanford Prison Experiment

2015

as John Lovett

Smoke

Smoke

2015

as Michael

The Heyday of the Insensitive Bastards

The Heyday of the Insensitive Bastards

2015

as Michael

Share

Share

2015

as Dylan

It Follows

It Follows

2015

as Paul

Dark Summer

Dark Summer

2015

as Daniel

Seasick Sailor

Seasick Sailor

2013

as Penna

Delete

Delete

2013

as Daniel Gerson

Matty Hanson and the Invisibility Ray

Matty Hanson and the Invisibility Ray

2011

as Matty Hanson

Just Peck

Just Peck

2011

as Michael Peck

It's Kind of a Funny Story

It's Kind of a Funny Story

2010

as Craig Gilner

Hungry Hills

Hungry Hills

2009

as Snit

The Listener

The Listener

2009

as Daniel / Lisa

United States of Tara

United States of Tara

2009

as Marshall Gregson

The Rocker

The Rocker

2008

as Moby Type Kid

The Altar Boy Gang

The Altar Boy Gang

2007

as Neil

Dead Silence

Dead Silence

2007

as Young Henry

The Winner

The Winner

2007

as Josh McKellar

A Lobster Tale

A Lobster Tale

2006

as Mike Stanton

Life with Derek

Life with Derek

2005

as Jamie

Saint Ralph

Saint Ralph

2005

as Kid Collins

Horsie's Retreat

Horsie's Retreat

2005

as Louie (uncredited)

Samantha: An American Girl Holiday

Samantha: An American Girl Holiday

2004

as Factory Boy

The Right Way

The Right Way

2004

as Young David

ReGenesis

ReGenesis

2004

as 10 Year Old Boy

The Sadness of Johnson Joe Jangles

The Sadness of Johnson Joe Jangles

2004

as Clint the Boy Doctor

Miss Spider's Sunny Patch Friends

Miss Spider's Sunny Patch Friends

2004

as Squidge (voice)

Missing

Missing

2003

as Danny Sheperd

Doc

Doc

2001

as R.J. Mitchell

Queer As Folk

Queer As Folk

2000

as Jim Stockwell Jr.

Family Guy

Family Guy

1999

as Kyle (voice)

Family Guy

Family Guy

1999

as Toby (voice)