American filmmaker, screenwriter, and playwright
Colby Day
Born Occupations Filmmaker, Screenwriter, Playwright Years active 2011–present
Colby Day is an American filmmaker, screenwriter, and playwright. [ 1] [ 2] [ 3] He was listed as one of MovieMaker Magazine 's "25 Screenwriters to Watch" in 2024, in collaboration with the Austin Film Festival (AFF), [ 4] [ 5] and the film In The Blink of an Eye , which he wrote, was the winner of the Alfred P. Sloan Feature Film Prize at the Sundance Film Festival 2026 [ 6] . His first feature film as a writer/director, The Comedy Hour, was announced in 2025.
Career Colby Day was born and raised in California . He graduated from the Department of Dramatic Writing at New York University 's Tisch School of the Arts in 2010. [ 7] His plays have been featured by several theater companies, including Crashbox Theatre Company, Pipeline Theatre Company, and The Tank , among others. [ 8] [ 9] He directed Appetite in 2012, which was nominated for Best Short Film at the Oldenburg International Film Festival [ 10] .
Day wrote In the Blink of an Eye , which was featured on The Black List in 2016. [ 11] The film, directed by Andrew Stanton features actors Rashida Jones , Kate McKinnon , and Daveed Diggs [ 12] is set to premiere at the Sundance Film Festival in 2026, where it is the winner of the Alfred P. Sloan Feature Film Prize [ 13] . He also adapted the science fiction novel Children of Time by Adrian Tchaikovsky for Lionsgate . [ 1] He was hired to develop and write the television pilot Simultaneous for Hulu , based on a short story by Eric Heisserer , with Heisserer and Lawrence Grey producing. [ 14]
Day wrote the screenplay for the Netflix film Spaceman (2024), directed by Johan Renck , starring Adam Sandler , Carey Mulligan , and Paul Dano , which was an adaptation of the novel Spaceman of Bohemia by Jaroslav Kalfar. [ 15] [ 16]
Day served as a producer of the short documentary The School of Canine Massage , directed by Emma D. Miller , which premiered at South by Southwest 2024 [ 17] . He is also a producer on Miller's first feature-length documentary, Father Figures [ 18] [ 19] .
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