---
name: "Jack Nielen"
canonical: "https://film.one/person/jack-nielen"
fi1m_id: "jack-nielen"
imdb_id: "nm12670642"
tmdb_id: 3262411
wikidata_id: "Q111651300"
roles: ["Actor"]
born: "5 August 2009"
reviewed_on_fi1m: 1
average_as: "actor"
average_over: 1
updated: "2026-09-30T21:17:28.251341+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."
---

# Jack Nielen

## Identity

Jack Nielen

- **Canonical:** https://film.one/person/jack-nielen
- **Type:** Person
- **Fi1m ID:** jack-nielen
- **IMDb ID:** nm12670642
- **TMDB ID:** 3262411
- **Wikidata ID:** Q111651300
- **Same entity:** https://www.wikidata.org/wiki/Q111651300, https://www.imdb.com/name/nm12670642/, https://www.themoviedb.org/person/3262411

Actor. Born 5 August 2009 in Chelsea, London, UK.

## Details

- **Work:** Actor
- **Born:** 5 August 2009, Chelsea, London, UK
- **Elsewhere:** https://www.wikidata.org/wiki/Q111651300, https://www.imdb.com/name/nm12670642/, https://www.themoviedb.org/person/3262411

## Biography

Jack Nielen is a British actor working in film and theatre. He made his feature film debut as Prince William in Pablo Larraín’s *Spencer* (2021), opposite Kristen Stewart as Princess Diana. The film premiered at the Venice Film Festival.

Trained in both the United States and the United Kingdom, Nielen has appeared in stage productions at Deerfield Academy, including Ralph Mayhew in *Blue Stockings* (2025) and Charlie Flynn in *Dog Eat Dog* (2026). He is based in London.

*Sources: imdb.com, jacknielen.com, rottentomatoes.com.*

## On Fi1m (1)

- *Spencer* (2021), Fi1m 73, as William — [page](https://film.one/film/spencer.md)

## Complete filmography (1)

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

- *Spencer* (2021), as William — Fi1m 73, [page](https://film.one/film/spencer.md)

---
© 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/jack-nielen