# Keir Gilchrist

Keir David Peters Gilchrist (/ˈkɪər ˈɡɪlkrɪst/; born 28 September 1992) is a Canadian actor. 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.

## Early life

Gilchrist was born in Camden Town, London, to Canadian parents Catherine (née Peters) and Ian Gilchrist. His maternal grandfather was banker, economist, and politician Douglas Peters, and his uncle is economist David Wilfrid Peters. Gilchrist spent his early years in London, before relocating to Boston, Massachusetts, during his childhood, then to New York City, before finally settling in Toronto, Ontario.

## Career

Gilchrist attended the Annex Children's Theatre. Gilchrist's first significant television role was that of Josh McKellar on Fox's short-lived television sitcom The Winner, which aired in 2007. From 2009 until its ending in 2011, Gilchrist co-starred as Marshall Gregson, the son of the lead character, on the Showtime comedy-drama series United States of Tara.
In 2009, Gilchrist won the lead role of Craig Gilner in the film It's Kind of a Funny Story, which premiered at the Sundance Film Festival in January 2010.
In 2014, Gilchrist co-starred in the film It Follows.
In 2015, he played the lead role of Daniel Austin in the film Dark Summer, starred as John Lovett in The Stanford Prison Experiment and William in Len and Company, and had a role in the short drama film Share.
In 2016, he co-starred in the film The Good Neighbor.
In 2017, he starred in the film Heartthrob as Henry, directed by Chris Sivertson. In August of that year, he starred as Sam Gardner, a teen on the autism spectrum who is ready to have a girlfriend, in the Netflix comedy-drama Atypical. He continued with the role for four seasons until the show concluded on 9 July 2021.

## Filmography

Key :
| † | Denotes works that have not yet been released |

### Film

| Year | Title | Role | Notes |
| 2004 | The Right Way | Young David | |
| 2004 | The Sadness of Johnson Joe Jangles | Clint the Boy Doctor | |
| 2005 | Horsie's Retreat | Louie | |
| 2005 | The Waldo Cumberbund Story | Young Waldo | |
| 2006 | A Lobster Tale | Mike Stanton | |
| 2007 | Dead Silence | Young Henry | |
| 2008 | The Rocker | Moby type kid | |
| 2009 | Just Peck | Michael Peck | |
| 2009 | Hungry Hills | Snit Mandolin | |
| 2010 | It's Kind of a Funny Story | Craig Gilner | |
| 2011 | Matty Hanson and the Invisibility Ray | Matty Hanson | |
| 2013 | Seasick Sailor | Penna | Short film |
| 2014 | It Follows | Paul | |
| 2015 | Dark Summer | Daniel Austin | |
| 2015 | The Stanford Prison Experiment | John Lovett | |
| 2015 | Share | Dylan | Short film |
| 2015 | The Heyday of the Insensitive Bastards | Michael | |
| 2015 | Len and Company | William | |
| 2015 | Tales of Halloween | The Stranger | Segment: "The Weak and the Wicked" |
| 2016 | The Good Neighbor | Sean Turner | |
| 2016 | Katie Says Goodbye | Matty | |
| 2017 | Heartthrob | Henry Sinclair | |
| 2019 | Castle in the Ground | Polo boy | |
| 2020 | Flashback | Andre | |
| 2021 | An Intrusion | Layne | |
| 2023 | The Featherweight | Billy Papaleo Jr. | |
| 2024 | Freaky Tales | Josh | |
| 2024 | Running on Empty | Mort | |
| 2025 | By Design | Gary | |

### Television

| Year | Title | Role | Notes |
| 2003 | Queer as Folk | Jim Stockwell Jr. | Episode: "#3.9" |
| 2004 | Doc | R. J. Mitchell | Episode: "The Last Ride" |
| 2004 | Samantha: An American Girl Holiday | Factory boy | Television film |
| 2005 | 1-800-Missing | Danny Sheperd | Episode: "Unnatural Disaster" |
| 2006 | Miss Spider's Sunny Patch Friends | Squidge | Episode: "Giddy Up Bugs/A Plushy Parable" |
| 2006 | ReGenesis | 10-year-old boy | Episode: "The Wild and the Innocent" |
| 2007 | Family Guy | Kyle (voice) | Episode: "The Tan Aquatic with Steve Zissou" |
| 2007 | The Winner | Josh McKellar | Main role |
| 2007 | Life with Derek | Jamie | 3 episodes |
| 2009 | The Listener | Daniel / Lisa | Episode: "Lisa Says" |
| 2009–2011 | United States of Tara | Marshall Gregson | Main role |
| 2012–2013 | Delete | Daniel Gerson | 2 episodes |
| 2013 | Family Guy | Toby (voice) | Episode: "Valentine's Day in Quahog" |
| 2013 | Newsreaders | Ben Hayflack | Episode: "31-Up" |
| 2014 | Sea of Fire | Rudy McAllister | Unsold pilot |
| 2017–2021 | Atypical | Sam Gardner | Main role |
| 2017 | Room 104 | Alex | Episode 10: "Red Tent" |
| 2023 | Love & Death | Ron Adams | Miniseries |
| 2025 | The Walking Dead: Dead City | Benjamin Pierce | |

### Music videos

| Year | Artist | Song | Notes |
| 2016 | Gatecreeper | "Desperation" | One of the two characters |
| 2016 | The Body | "The Myth Arc" | |