
Between 20, he had a short sketch segment entitled Les Bonus de Guillaume on Le Grand Journal, parodying DVD bonus features. Gallienne made his film debut in 1992 in Tableau d'honneur and he has starred in Sofia Coppola's 2006 film Marie Antoinette. He attended Cours Florent for three years before studying under Daniel Mesguich, Stéphane Braunschweig and Dominique Valadié at the French National Academy of Dramatic Arts, graduating in 1998. The death of a close cousin convinced him to take up acting at the age of 19. Two years later, after a nervous breakdown, he was sent to St John's College near Portsmouth in England. From the age of 10, he attended La Salle Passy Buzenval where he was bullied for his effeminate personality.


Gallienne was born in Paris to French businessman Jean-Claude and Russian-Georgian aristocrat Melitta Gallienne, the third of four sons.

He has received two Molière Awards for his stagework and has won two César Awards, one for writing and the other for his performance in his autobiographical comedy film Me, Myself and Mum (2013). Guillaume Gallienne (born 8 February 1972) is a French actor, screenwriter and film director.
