Alexandre Astier (born 16 June 1974) is a French writer, director, editor, scriptwriter, humorist, actor and composer.

Astier is most known as the creator, director, writer, editor, composer, and lead actor of the French television series Kaamelott, in which he also plays King Arthur.

Alexandre Astier was born in Lyon on June 16, 1974, to Joëlle Sevilla and Lionnel Astier, both actors and producers mostly in Lyon's theatre scene.

Alexandre Astier studied music at the conservatory and at the American School of Modern Music of Paris. He also studied acting and screenwriting.

Four of Astier's seven children have featured in Kaamelott, and both his parents are main characters in the series. His daughters Ariane and Jeanne Astier play respectively Mehben and Mehgan, the daughters of Karadoc and Maevanwi (in the episodes Pupi and Exiles). His son Neil (who also appears as Karadoc and Mevanwi's son in Pupi) plays young Arthur in the season Book V, and in the final scene of Book VI. His son Ethan plays Arthur's dream heir in Book V. Moreover, the mother of his first five children, Anne-Gaëlle Daval, is head of the costume designs on Kaamelott and the short film Dies Irae.

In 2012, he plays Johann Sebastian Bach in his humorous show "Que ma joie demeure !" at the theater.

In 2014, his comic show "L'Exoconférence" begins at the theater in September.

Passionate of technologies, he confirms in 2018 on twitter, that Kaamelott's film adaptation has been written with a bepo keyboard on a raspberry pi, running Wordgrinder text-editor software.

He also owns a castle in Ardèche area, where he can store lot of his music instruments into a specific room.

Alexandre Astier first got attention from the Lyon's public thanks to the play Le Jour du froment. He also acted in Nous crions grâce, a play written and directed by Jacques Chambon, to whom he gave the role of Merlin in Kaamelott.

In 2001, he was the co-screenwriter and the songwriter of the short movies Soyons sport and Un soupçon fondé sur quelque chose de gras.

In 2002 he was the director of Dies Irae, a 14-minute short movie that is also the first draft of the Kaamelott TV show.

In 2006, he featured in Hey Good Looking!, a French movie by Lisa Azuelos. The same year, he appeared in Asterix at the Olympic Games by Frédéric Forestier and Thomas Langmann, and in Home Sweet Home by Didier Le Pêcheur.

In 2009, he played the role of the ex-husband of Sophie Marceau in LOL (Laughing Out Loud), another comedy by Lisa Azuelos.

In 2012, he presented his first feature film as a director, David et Madame Hansen, in which he played the main protagonist alongside Isabelle Adjani.

In 2014, he was the co-director and the screenwriter of Asterix: The Mansions of the Gods.

In 2015, he appeared in the film All Three of Us, directed by Kheiron.

In 2018, he wrote an original screenplay for a new Asterix movie: Asterix: The Secret of the Magic Potion. Like Asterix: The Mansions of the Gods, he co-directed it with Louis Clichy.

In 2025, he plays the role of a drunken shrink in the second season of Bref. He had already appeared as a cameo in the first season. ...

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