2005–2007: Career beginnings Seydoux has stated that as a child she wanted to become an
opera singer, studying music at the
Conservatoire de Paris, but eventually her shyness compelled her to drop the idea. It was not until the age of eighteen that she decided to become an actress. One of her close friends was an actor, and Seydoux has said: "I found his life wonderful, I thought, 'Oh my God, you can travel, you're free, you can do what you want, you're the boss. She fell in love with an actor and decided to become an actress to impress him. She took acting classes at French drama school
Les Enfants Terribles, and in 2007 she took further training at
New York's
Actors Studio with Corinne Blue. In 2005, Seydoux appeared in the music video for
Raphaël's single, "
Ne partons pas fâchés". The following year, Seydoux played her first major screen role as one of the main characters in Sylvie Ayme's
Girlfriends (
Mes copines). She starred in
Nicolas Klotz's short film
La Consolation, which was exhibited at the
2007 Cannes Film Festival. In these years, she also did her first work as a model for
American Apparel, posing for their
Pantytime campaign, and had a role in the films
13 French Street and
The Last Mistress. when she appeared in
Christophe Honoré's
The Beautiful Person, a role that earned her the 2009
Chopard Award at the Cannes Film Festival for Best Upcoming Actress and a
César Award nomination for Most Promising Actress.
Rebecca Zlotowski's , which earned her a second
César Award nomination for Most Promising Actress, and
Raúl Ruiz's
Mysteries of Lisbon. Seydoux auditioned and was one of the four finalists, to play
Lisbeth Salander in
The Girl With the Dragon Tattoo, but the part ultimately went to actress
Rooney Mara. Later, Seydoux participated in another Hollywood production,
Mission: Impossible – Ghost Protocol, in which she played the assassin Sabine Moreau alongside stars
Tom Cruise and
Jeremy Renner. She also played Elle in the short-film ''Time Doesn't Stand Still
by Benjamin Millepied and Asa Mader. After Mission: Impossible
, Seydoux returned to French cinema, starring in My Wife's Romance (Le Roman de ma femme
) and Roses à crédit''. More generally, Léa Seydoux's career accelerated from 2012 and allowed the actress to choose her projects from the offers she received, without necessarily having to go through screen tests. According to the specialist press, the young woman then appeared as one of the "essential French actresses in Hollywood", and even as "the most sought-after actress of her generation", who at only 26 years-old, "has always made the right choices and has tackled almost all genres". In the process, she became the image of the perfume
Candy for the Italian luxury group
Prada. In 2012, she starred in
Farewell, My Queen. The film opened the
62nd Berlin International Film Festival, where it was met with critical acclaim. Critics praised director
Benoît Jacquot's decision to cast Seydoux in the key-role of Sidonie, stating "her luminous but watchful eyes suggest a soul wise beyond her years." Kenneth Turan of the
Los Angeles Times wrote that Seydoux was an excellent choice for the part, calling her a remarkably versatile young actress and pointed to the stark difference in her characters from her previous roles in
Midnight in Paris and
Mission: Impossible – Ghost Protocol. That same year, she appeared in the Swiss drama film,
Sister. The film competed in competition at the 62nd Berlin International Film Festival, where it won the Special Award, the Silver Bear, and was selected as the Swiss entry for the
Best Foreign Language Oscar at the
85th Academy Awards. Critics again praised Seydoux for bringing a strong array of emotions to a highly unsympathetic part and called her performance intensely moving. That year, Seydoux was attached to star in
Michael Gondry's
Mood Indigo, but had to drop out before filming due to scheduling conflicts with
Blue Is the Warmest Colour, being replaced by
Charlotte Le Bon. By the end of 2012, she had filmed
Blue Is the Warmest Colour by
Abdellatif Kechiche, and
Grand Central by
Rebecca Zlotowski, and both exhibited at the
66th Cannes Film Festival.
2013–2018: Blue is the warmest Colour and critical acclaim In 2013, Seydoux was nominated for Best Actress at the
38th César Awards for her role as Sidonie Laborde in
Benoît Jacquot's
Farewell, My Queen. Later that year at the
66th Cannes Film Festival,
Blue Is the Warmest Color won the and the jury, headed by
Steven Spielberg, took the unusual move of awarding the prize not just to the director
Abdellatif Kechiche, but also to the film's two stars, Seydoux and
Adèle Exarchopoulos. Seydoux stated: "Winning that honor was such a thing. It's engraved in me," also remarking that "attending the
Cannes Film Festival will always remind me of that big moment of my life". , 2013 In 2014, Seydoux won the Best Actress award at the
19th Lumière Awards for her roles in
Blue Is the Warmest Colour and
Grand Central. She was also nominated for the
BAFTA Rising Star Award and the
César Award for Best Actress in the same year. Her role in
Blue Is the Warmest Colour earned her rave reviews, numerous accolades and international attention. Seydoux co-starred with
Vincent Cassel in
Beauty and the Beast, a Franco-German romantic fantasy film directed by
Christophe Gans. Her other 2014 films were
The Grand Budapest Hotel, a
Wes Anderson film in which she played Clotilde; and
Bertrand Bonello's
Saint Laurent, in which she played the role of the titular designer's muse,
Loulou de la Falaise. Seydoux was supposed to star in
Benoît Jacquot's
Three Hearts, alongside
Catherine Deneuve and
Charlotte Gainsbourg, but ended up dropping out due to the worldwide press tour of
Blue Is the Warmest Colour. She was replaced by Deneuve's daughter,
Chiara Mastroianni. In 2015, Seydoux starred with
Vincent Lindon in
Diary of a Chambermaid, a period piece based on
Octave Mirbeau's novel ''
Le Journal d'une femme de chambre. Originally, the film was announced with Marion Cotillard in the leading role, but the script was rewritten specifically for Seydoux, marking her second collaboration with Benoît Jacquot, after the 2012 film Farewell, My Queen''. Although the film was screened in competition at the
65th Berlin International Film Festival to mixed reviews, critics were generally receptive to Seydoux's performance.
Peter Bradshaw of
The Guardian said that it was "a fine central performance from Seydoux", while critic Jordan Mintzer wrote that her performance is "robust and engaging throughout [the film]". Seydoux appeared alongside
Colin Farrell and
Rachel Weisz in
Yorgos Lanthimos's English-language debut
The Lobster (2015), in which she played the ruthless leader of a group of rebels, the loners, who live in the woods. The film had its premiere at the
2015 Cannes Film Festival, where it won the
Jury Prize. She also appears as
Madeleine Swann, the
Bond girl in the 2015 film
Spectre, the 24th
James Bond film. but dropped out before shooting, being replaced by
Anaïs Demoustier. In 2022, Seydoux remembered the occasion, saying that she was against the fact that Donzelli seemed to approve the incestuous relationship between the two main roles, "she wanted to do a film where even you can fall in love with your biological brother. I was like, 'No. In 2016,
Minister of Culture Fleur Pellerin made her a
Dame of the Order of Arts and Letters (). Seydoux later appeared in
Xavier Dolan's ''
It's Only the End of the World'', based on Jean-Luc Lagarce's play
Juste la fin du monde. In 2018, Seydoux co-starred alongside
Ewan McGregor in
Zoe, a sci-fi romance by
Drake Doremus. The film had its world premiere at the
Tribeca Film Festival on April. She also appeared in
Thomas Vinterberg's
Kursk, a drama film about the 2000
Kursk submarine disaster. In May 2018, she served as a member of the jury at the
71st Cannes Film Festival. Also in May 2018, it was announced that Seydoux would star in
Ari Folman's
Horse Boy with
Joel Kinnaman. Folman said that it was "a passion project" and that "he felt compelled to explore this important story in a cinematic way", but the movie was never shot. Seydoux was invited to join the
Academy of Motion Picture Arts and Sciences within the same year.
2019–present: Work with auteurs and continued acclaim Seydoux stars in
Hideo Kojima's video game
Death Stranding. She provided the
voice,
performance and her likeness to the character Fragile, the head of
Fragile Express.
Death Stranding released in November 2019 to positive reviews in which critics called her a "marvel", and described her performance as being among some of the "most nuanced performance capture ever seen in the medium". She also stars in the game's sequel,
Death Stranding 2: On the Beach (2025).
Death Stranding 2: On the Beach released in June 2025 to critical acclaim, with Seydoux being lauded again for her performance as Fragile, which critics called "a layered character that the French actress elevates even further". She also appeared in
Oh Mercy!, a French crime drama by director
Arnaud Desplechin. The film premiered at Cannes and was selected to compete for the
Palme d'Or. In 2020, Seydoux collaborated with
Arnaud Desplechin for the second time on
Deception (2021). In June 2020, Seydoux was cast as the lead role in
Arnaud des Pallières'
Party of Fools (2023), alongside
Charlotte Rampling and
Cécile de France, but all three actresses dropped out of the movie before filming, with Seydoux being replaced by
Mélanie Thierry. In September 2020, it was announced that Seydoux would be starring in
Mia Hansen-Løve's film
One Fine Morning. For her performance in
One Fine Morning, Seydoux received critical acclaim, Justin Chang from
Los Angeles Times praised her: "Walking down the street in a sweater and a short-cropped
Jean Seberg haircut, Seydoux dissolves into Sandra's world beautifully. What holds you, as much as the actor's natural magnetism, is her ability to hold things back, her talent for emotional reserve". Hansen-Løve declared herself to be a huge admirer of Seydoux as an actor, as well as her choices throughout her vast filmography, saying: "A lot of [her] characters are very sophisticated, very glamorous. In the past, it felt she was seen by male directors as a bit of a fantasy. I wanted her to be more down-to-earth, closer to us, closer to me. And I had the feeling there was a rawness about her that my film could maybe emphasize". In addition, Seydoux stated that "it's the first time that I really played a normal woman, the girl next door". In 2021, Seydoux reprised her role as
Madeleine Swann in the
James Bond film
No Time to Die. The film's release was postponed worldwide due to the
COVID-19 pandemic. She starred in
Wes Anderson's ensemble comedy-drama
The French Dispatch (2021). She played Lizzy in
Ildikó Enyedi's
The Story of My Wife (2021), and starred in the film
France (2021) by
Bruno Dumont. In January 2021, it was announced that Seydoux would star in
Bertrand Bonello's sci-fi melodrama
The Beast (
La Bête). Seydoux's performance in
The Beast was called a "career-best" from critics, Yasmin Omar from
Curzon wrote: "What keeps all of the film's sky-high concepts not only legible, but engrossing, is Seydoux; she is its grounding force, guiding us through the Dantean maze of mahogany-panelled ballrooms and neon-streaked dancefloors". In April 2021,
Deadline reported that Seydoux would star alongside
Kristen Stewart and
Viggo Mortensen in
David Cronenberg's sci-fi thriller
Crimes of the Future. Seydoux said in the film, she plays a surgeon in a dystopian future "where people eat plastic". In June 2022, it was announced that Seydoux was cast as
Lady Margot in
Denis Villeneuve's
Dune: Part Two, which released in March 2024. In 2023, Seydoux dropped out of two projects she was cast in 2022:
David Cronenberg's
The Shrouds, being replaced by
Diane Kruger and
Audrey Diwan's
Emmanuelle, being replaced by
Noémie Merlant. A year later, Seydoux said that the reason she dropped out of
The Shrouds was because she wanted to have some time for herself, adding: "I loved working with David Cronenberg. I love him. I'm a huge fan, but then I thought, first of all, I was a bit tired. I wanted to have a break". In January 2024, Seydoux revealed in an interview with
Télérama that she had recently completed two weeks of filming for an unannounced new film by
Quentin Dupieux, then titled
À notre beau métier (
To Our Beautiful Profession), which would also star
Louis Garrel,
Raphaël Quenard and
Vincent Lindon. Seydoux read the script in one sitting and quickly accepted the role out of admiration for Dupieux, who she described as an "extraordinary filmmaker" whose style of humour "hides an increasingly social depth, through imperfect and clumsy characters". She described the film as a
mise en abyme about "actors who play in a lousy film" and confront their characters and lines, and appraised it as "crazy" and "very, very funny". Production for the film was kept fully secret from beginning to end.
The Second Act was selected to be the opening film at the
77th Cannes Film Festival, where it had its world premiere out-of-competition on 14 May 2024. It was released theatrically in France on the same day by Diaphana Distribution and became a box-office hit with nearly 500,000 spectators, making it Dupieux's biggest success to date. In March 2024, it was announced that Seydoux would reunite for the second time with
Ildiko Enyedi in
Silent Friend. In the film, she will play a scientist named Alice, opposite
Tony Leung. Filming took place in
Marburg, from April to May. Also in March 2024, it was announced that Seydoux would reunite with
Arnaud Desplechin for the third time, as she signed on to star in
The Thing That Hurts, alongside
Golshifteh Farahani,
John Turturro and
Jason Schwartzman. In April 2024, it was announced that Seydoux will star opposite
Josh O'Connor in
Luca Guadagnino's
Separate Rooms, an adaptation of the 1989 novel
Camera separate by
Pier Vittorio Tondelli. In May 2025, O'Connor revealed he is no longer attached to the project but that Guadagnino "may well do it". In May 2024, Seydoux signed on to star in
The Unknown, the next film by
Arthur Harari, after being attached to the project since September 2023. Filming began on March and wrapped in May 2025. Also in May 2024, the French magazine
Le Monde revealed that Seydoux will star alongside
Adam Driver in
Leos Carax's next project, with shooting scheduled for 2026. In October 2024, it was announced that Seydoux would be part of the ensemble cast for the film
Alpha Gang by the
Zellner brothers, joining
Cate Blanchett,
Steven Yeun,
Zoe Kravitz,
Riley Keough,
Channing Tatum and
Dave Bautista. Production began in June 2025 in Budapest. In September 2025, Seydoux signed on to star in
Marie Kreutzer's
Gentle Monster, alongside
Catherine Deneuve,
Jella Haase and
Laurence Rupp, with production scheduled to begin later that month. In January 2026, Seydoux joined
Mikey Madison in
Charlie Polinger's
The Masque Of The Red Death, a revisionist and darkly comedic take on the short story of the same name by
Edgar Allan Poe. ==Other endeavours==