Gregoris Rentis was born in Athens.
Having received his MFA in film directing from California Institute of the Arts, he went on to direct awarded commercials and music videos.
His graduation film SUNDOWN (2010) premiered at Rotterdam Film Festival. DOGWATCH, his first feature-length documentary film, received the TitraFilm Jury award at Les Arcs as a work in progress and premiered at the International Competition section of Visions Du Reel in 2022.