Niki Demiller is a French film composer based in Paris. His music is defined by emotionally driven thematic writing and a distinctive sonic identity, blending classical instrumentation, treated electric guitars, and analogue electronic textures.

​

In 2026, he composed the sonic identity for PhantasIA, the Arte series exploring artificial intelligence and contemporary art. His score for Une arme à la main, j'ai traversé le désert, the feature film by Laurence Garret and Juan Manuel Sepúlveda, was nominated for the Sony Avant-Son Prize at the Sœurs Jumelles Festival, while the film premiered in competition at Cinéma du Réel.

​

He received the Sacem Award for Best Original Score at the Paris Podcast Festival for the podcast Une Étoile Rouge Ne Meurt Jamais, which he also co-wrote. His score for Langue maternelle by Mariame N'Diaye was selected among the Talents of La Fête du Court Métrage. The film won Best Francophone Film at Dakar Court, while its score was nominated for Best Original Score at the Phoenix Rising International Film Festival London. He also composed the score for Jusqu'au Bout by Xavier Demoulin, winner of the Grand Prize at Hlm sur Court(s).

​

Before turning to film composition, Demiller performed with his garage rock band Les Brats. At the age of seventeen, he opened for Iggy Pop and The Stooges at the Zénith de Paris and later appeared in Yann Gonzalez's short film I Hate You Little Girls, selected for the Directors' Fortnight at Cannes.

​

A laureate of the Émergence, Crescendo and Trio programmes at La Maison du Film, he has also been in residence at Moulin d'Andé–CECI and So Film. He has served on juries for festivals including Premiers Plans, Hlm sur Court(s) and PRIFF UK, and was selected for the Talent Village at Les Arcs Film Festival.

​

He is represented by Raphaël Vinzant at Time Art.