Born on January 12, 1999, in Créteil, Lauréna Thellier grew up with a keen interest in horseback riding, which she practiced assiduously at the Cercle Hippique Saint-Georges. After obtaining her baccalaureate in economics and social studies, she considered a career in international business, but chance led her to film when she auditioned for Bruno Dumont's "Ma Loute" (2016). Selected, she starred alongside Juliette Binoche and Fabrice Luchini.

This first role opened the doors to film for her. She followed this with Marie-Castille's "Le Ciel Attendra" (2016), a drama about radicalization, and then Érick Zonca's "Fleuve noir" (2018), where she co-starred with Vincent Cassel and Romain Duris. In 2020, she appeared in Sarah Marx's "K contraire."

On television, she gained attention in the series "Mental" on France TV Slash, where she played Esther, a teenager in a psychiatric hospital. She also starred in "Paris Police 1900," a historical epic broadcast on MyCanal.

After several years in front of the camera, Lauréna Thellier decided to explore directing. His ambition is to combine the two professions, demonstrating his passion and his desire to broaden his artistic field.