Delphine and Muriel Coulin are French sisters who form a directing duo. They are best known for their film 17 Girls.

Muriel Coulin began work as a cinematographer and camera assistant throughout the 1990s. Delphine is also a novelist. The sisters began collaborating on films in 1997 with the short film Il faut imaginer Sisyphe heureux (a reference to Albert Camus' The Myth of Sisyphus).