---
name: "Colby Day"
canonical: "https://film.one/person/colby-day"
roles: ["Writer"]
reviewed_on_fi1m: 1
average_as: "writer"
average_over: 1
updated: "2026-09-17T11:54:49.242861+00:00"
licence: "© Fi1m Ltd. Written by AI under a human editor; checked against sources before publication. Quote with attribution and a link to the canonical URL."
---

# Colby Day

Writer. Born in California, USA.

## Details

- **Work:** Writer
- **Elsewhere:** https://en.wikipedia.org/wiki/Colby_Day, https://www.wikidata.org/wiki/Q131858592, https://www.imdb.com/name/nm3685485/, https://www.themoviedb.org/person/1266291

## Streaming the US now

- **Apple TV:** [*For All Mankind*](https://film.one/tv/for-all-mankind-2019.md) (66)

For United States; add `?region=XX` for another country.

## Biography

Colby Day is an American screenwriter, filmmaker and playwright. He graduated from the Department of Dramatic Writing at New York University’s Tisch School of the Arts in 2010.

Day wrote the screenplay for the 2024 Netflix film *Spaceman*, directed by Johan Renck. He served as a writer and story editor on season five of the Apple TV+ series *For All Mankind* (2019), which aired in 2026, and wrote the episode “No Sudden Moves”. He also wrote the screenplay for the 2026 Searchlight Pictures film *In the Blink of an Eye*, directed by Andrew Stanton.

In 2024 he was named one of MovieMaker Magazine’s “25 Screenwriters to Watch”. *In the Blink of an Eye* won the Alfred P. Sloan Feature Film Prize at the Sundance Film Festival in 2026. Day is married to documentary filmmaker Emma D. Miller.

*Sources: en.wikipedia.org, imdb.com, colbyday.com.*

## On Fi1m (1)

- *For All Mankind* (2019), Fi1m 66, Writer, Story Editor — [page](https://film.one/tv/for-all-mankind-2019.md)

## Complete filmography (10)

Every credit, newest first. Titles without a page can be requested for review on the HTML page.

- *In the Blink of an Eye* (2026), Executive Producer, Writer
- *The School of Canine Massage* (2024), Producer
- *Spaceman* (2024), Screenplay
- *Lead/Follow* (2022), Producer, Writer, Director
- *For All Mankind* (2019), series, Writer, Story Editor — Fi1m 66, [page](https://film.one/tv/for-all-mankind-2019.md)
- *Storefront* (2013), Writer, Director, Producer
- *Appetite* (2012), Editor, Director
- *Perks*, Writer, Director, Producer
- *The Comedy Hour*, Director, Writer
- *Father Figures*, Producer

## Gallery

- ![Colby Day, Andrew Stanton, Kate McKinnon and Daveed Diggs at the 2026 Sundance Film Festival for In the Blink of an Eye](https://film.one/media/person/795126/gallery-d432e1c2d35e.jpg) Colby Day, Andrew Stanton, Kate McKinnon and Daveed Diggs at the 2026 Sundance Film Festival for In the Blink of an Eye — Sarah K Joyce, CC BY-SA 4.0, via Wikimedia Commons (https://thumb.wikimedia.org/wikipedia/commons/thumb/4/48/Colby_Day%2C_Andrew_Stanton%2C_Kate_McKinnon_and_Daveed_Diggs_at_the_2026_Sundance_Film_Festival_for_In_the_Blink_of_an_Eye_01.jpg/1280px-Colby_Day%2C_Andrew_Stanton%2C_Kate_McKinnon_and_Daveed_Diggs_at_the_2026_Sundance_Film_Festival_for_In_the_Blink_of_an_Eye_01.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=thumbnail)
- ![Colby Day](https://film.one/media/person/795126/gallery-ed7a74c51d0a.jpg) Colby Day — Sarah K Joyce, CC BY-SA 4.0, via Wikimedia Commons (https://thumb.wikimedia.org/wikipedia/commons/thumb/2/21/Colby_Day_at_the_2026_Sundance_Film_Festival_for_In_the_Blink_of_an_Eye_05.jpg/1280px-Colby_Day_at_the_2026_Sundance_Film_Festival_for_In_the_Blink_of_an_Eye_05.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=thumbnail)
- ![Taylor Friedman, DanTram Nguyen, Jared Goldman, Mollie Goldstein, Kate McKinnon, Colby Day, Rhona Rees, Andrew Stanton, Daveed Diggs, and Matthew Greenfield at  (2026)](https://film.one/media/person/795126/gallery-26bd7653adc0.jpg) Taylor Friedman, DanTram Nguyen, Jared Goldman, Mollie Goldstein, Kate McKinnon, Colby Day, Rhona Rees, Andrew Stanton, Daveed Diggs, and Matthew Greenfield at  (2026) — Sarah K Joyce, CC BY-SA 4.0, via Wikimedia Commons (https://thumb.wikimedia.org/wikipedia/commons/thumb/1/15/Taylor_Friedman%2C_DanTram_Nguyen%2C_Jared_Goldman%2C_Mollie_Goldstein%2C_Kate_McKinnon%2C_Colby_Day%2C_Rhona_Rees%2C_Andrew_Stanton%2C_Daveed_Diggs%2C_and_Matthew_Greenfield_at_the_2026_Sundance_Film_Festival_for_In_the_Blink_of_an_Eye.jpg/1280px-thumbnail.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=thumbnail)

---
© Fi1m Ltd. Written by AI under a human editor; checked against sources before publication. Quote with attribution and a link to the canonical URL. Canonical: https://film.one/person/colby-day