---
name: "Théo Costa-Marini"
canonical: "https://film.one/person/theo-costa-marini"
fi1m_id: "theo-costa-marini"
imdb_id: "nm2907222"
tmdb_id: 1672596
roles: []
reviewed_on_fi1m: 1
average_over: 1
updated: "2026-10-22T03:05:50.716721+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."
---

# Théo Costa-Marini

## Identity

Théo Costa-Marini

- **Canonical:** https://film.one/person/theo-costa-marini
- **Type:** Person
- **Fi1m ID:** theo-costa-marini
- **IMDb ID:** nm2907222
- **TMDB ID:** 1672596
- **Same entity:** https://www.imdb.com/name/nm2907222/, https://www.themoviedb.org/person/1672596

Actor.

## Details

- **Active:** 2025–present
- **Also known as:** Théo Costa Marini
- **Elsewhere:** https://www.imdb.com/name/nm2907222/, https://www.themoviedb.org/person/1672596

## Coming up

- *Moulin* (2026-10-28), as Aubry / Thomas

## Biography

Théo Costa-Marini is a French actor. He trained at the ENSATT in Lyon and has worked in theatre under directors including Simon Deletang, Matthias Langhoff, Évelyne Didi, Jean-Philippe Albizzati, Théo Kailer and Aurélia Ivan. In 2011 he appeared at the Festival d’Avignon in the play Lyon-Kaboul-Thèbes aller retour, Œdipe tyran.

His screen credits include the films *Bastille Day* (2016) as Xavier, *Jessica Forever* (2019) as Trésor and *Case 137* (2025) as Arnaud Lavallée, and the series *Black Spot* (2017–2019) as Roman Barthélémy, *Women at War* (2022) as Adjudant Bernard Bergeret, *Andor* (2025) as Dilan and *The Walking Dead: Daryl Dixon* (2024) as Mathis. He is also credited as Ernest Defarge in the 2026 series *A Tale of Two Cities*.

*Sources: allocine.fr, imdb.com.*

## On Fi1m (1)

- *Case 137* (2025), Fi1m 77, as Arnaud Lavallée — [page](https://film.one/film/case-137.md)

## Complete filmography (25)

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

- *Moulin* (2026), as Aubry / Thomas
- *A Tale of Two Cities* (2026), series, as Ernest Defarge
- *Case 137* (2025), as Arnaud Lavallée — Fi1m 77, [page](https://film.one/film/case-137.md)
- *The Stranger* (2025), as Police Officer
- *Surface* (2025), series, as Romain Valant
- *Not All Men, But...* (2025), as Maxime Barka
- *Nismet* (2025), series, as Denis
- *Let's Fail in Love* (2024), Scenario Writer
- *The World Doesn’t Exist* (2024), series, as Stéphane Muller
- *Yuck!* (2024), as Léo's Father (voice)
- *The Vice of Buggery* (2023), Actor
- *Samber* (2023), series, as Laurent Labot
- *The Walking Dead: Daryl Dixon* (2023), series, as Mathis
- *The Best of Us* (2023), series, as Benoit Guérin
- *Astrakan* (2022), as Luc
- *Andor* (2022), series, as Dilan, Darin — Fi1m 86, [page](https://film.one/tv/andor.md)
- *Women at War* (2022), series, as Adjudant Bernard Bergeret
- *Jessica Forever* (2019), as Trésor
- *Sape* (2018), as Sapeur 2
- *The Sower* (2017), as Etienne
- *Black Spot* (2017), series, as Roman Barthélémy
- *Bastille Day* (2016), as Xavier
- *Wide-Eyed* (2016), as Voice
- *The Little Murders of Agatha Christie* (2009), series, as Damien Martinez
- *La nuit du feu*, series, Actor

---
© 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/theo-costa-marini