Early work (2005–2015) In 2005, while studying theater at the studio Le Magasin, Civil made his feature film debut with a small role in the comedy
Le Cactus, directed by Michel Munz and Gérard Bitton. His second acting gig was an episode of the TV series
Louis la Brocante. In 2006, he played the high school student Dread in the
Disney Channel France teen sitcom series
Trop la Classe!, that led him to participate in the
2007 Disney Channel Games representing France. Civil left
Trop la Classe! when director
Laurence Ferreira Barbosa offered him the leading role in her independent drama film
Dying or Feeling Better () released in 2008, His performance, at the age of 18, earned him a nomination for the
Lumière Award for Most Promising Actor, and a pre-nomination for the
César Award for Most Promising Actor in 2009. That same year, he appeared in the web-series
Twenty Show released on
Myspace, which later became a TV film broadcast by
Arte in May 2009. He then continued his theater studies while filming for cinema and television, in particular with the main role in the short film
In Our Blood (), directed by
Guillaume Senez, for which he won the Best Actor award at the
Brussels Short Film Festival and the double award for interpretation (Jury Award and Audience Award) at the 15th Jean Carmet Festival in Moulins. That same year, he did not go to class for all of his senior year because he knew he wanted to pursue acting. and received a second pre-nomination for the César Award for Most Promising Actor. He also reprised his role as Dread in the TV series
Trop la Classe Café!, and appeared in the erotic drama film
Elles directed by
Małgorzata Szumowska, in which he played the teenage son of the protagonist portrayed by
Juliette Binoche. In 2013, he won the Premier Rendez-vous prize at the
Cabourg Film Festival for his performance in the comedy film
Macadam Baby, written and directed by Patrick Bossard. Between 2013 and 2015, he starred on
Canal+'s
Casting(s), a short comedy series about the world of cinema created by
Pierre Niney and
Ali Marhyar. In 2014, he ventured into English-language productions, such as the independent British-Irish black comedy film
Frank, directed by
Lenny Abrahamson, in which he played Baraque, the bassist of the band Soronprfbs, led by the title character played by
Michael Fassbender. Civil and the other actors of
Frank performed the songs live in the film and in the album with the soundtrack. The band performed at concerts in real life to promote the film, such as the talk show
The Colbert Report on 6 August 2014. Civil also played the urban explorer Papillon in the American horror film
As Above, So Below, directed by
John Erick Dowdle, and had a supporting role in the American mini-series ''
Rosemary's Baby'', directed by
Agnieszka Holland. but the channel did not pick it up as a series. After several appearances in French TV series, in 2015 Civil landed a recurring supporting role as aspiring actor Hippolyte Rivière in the popular comedy series
Call My Agent! (), created by
Fanny Herrero. He also had a supporting role in the thriller
Made in France, directed by
Nicolas Boukhrief.
Breakthrough (2016–present) In 2016, he became known to the general public when he co-starred alongside
Pierre Niney in the comedy film
Five directed by Igor Gotesman, That same year, Civil and his co-stars from
Five appeared in the music video for the song "
Reuf" by French rapper
Nekfeu, which was featured in the film's soundtrack. In 2017, he starred in the French action film
Burn Out directed by
Yann Gozlan. He also played the youngest sibling of
Ana Girardot and
Pio Marmaï in the drama
Back to Burgundy (), directed by
Cédric Klapisch. He was a member of the jury of the "33 short films" section of the
2018 Cabourg Film Festival, and was also a member of the Revelation jury at the
2018 Deauville American Film Festival presided by
Cédric Kahn. The year 2019 allowed him to lead several projects: first the geopolitical thriller ''
The Wolf's Call'' () by
Antonin Baudry; then in
Safy Nebbou's psychological thriller
Who You Think I Am () alongside Juliette Binoche; which earned him the Best Actor award at the
L'Alpe d'Huez Film Festival, and he also reunited with Cédric Klapisch and Ana Girardot in the romantic comedy
Someone, Somewhere (), for which he earned a nomination for the
Globe de Cristal Award for Best Actor. Civil won a
Chopard Trophy for Male Revelation at the
2019 Cannes Film Festival. That same year, he was a member of the jury for the 9th Nikon Film Festival presided by Marjane Satrapi, and was also a member of the feature film jury at the 11th Beaune International Thriller Film Festival presided by
Benoît Jacquot. In 2020, he appeared in one episode of the Canal+ comedy series
La Flamme, a spoof of reality dating competition shows. In 2021, he starred the film
BAC Nord directed by
Cédric Jimenez, in which he played a police officer from the Anti-Crime Squad (BAC) of
Marseille opposite
Gilles Lellouche and
Karim Leklou, which earned Civil a nomination for the
César Award for Best Supporting Actor for his performance. He also had a supporting role as a motel manager whose right forearm had a prosthesis with a baseball glove replacing his hand in the comedy TV film
La Vengeance au Triple Galop, a parody of the 1983 Australian TV series
Return to Eden, directed by
Alex Lutz and Arthur Sanigou and broadcast by Canal+ on 4 October 2021. In 2022, he played the physiotherapist Yann in the comedy drama
Rise () by Cédric Klapisch, for which he received his second César nomination for Best Supporting Actor. He also lent his voice to the character
Buzz Lightyear in the French version of the animated film
Lightyear, and he voiced the character Phillip Graves in the French version of the video game
Call of Duty: Modern Warfare II. In 2023, he portrayed
D'Artagnan in two new French film adaptations of
Alexandre Dumas' 1844 novel
The Three Musketeers directed by
Martin Bourboulon; ''
The Three Musketeers: D'Artagnan and The Three Musketeers: Milady. D'Artagnan'' became his biggest commercial success, with over 3 million tickets sold in France. The same year, he played an undercover police officer who infiltrates a group of environmental activists in
Romain Cogitore's romantic thriller
A Place to Fight For (), the first French original film from
Disney+. In November 2023, Civil was named Actor of the Year by
GQ France's
Men of the Year Awards. In 2024, Civil starred in the drama
The Good Teacher (), directed by
Teddy Lussi-Modeste, in
Beating Hearts directed by Gilles Lellouche, and in
Fiasco, a comedy miniseries co-created by Pierre Niney and Igor Gotesman for
Netflix. In 2025, Civil starred in
Arnaud Desplechin's drama
Two Pianos, in which he portrays a pianist who lives an impossible love story. In September 2025, Civil was cast as
Charles Darnay in the upcoming
BBC One British miniseries
A Tale of Two Cities, adapted from the
novel of the same name by
Charles Dickens. ==Other ventures==