Det Beni Department (üüb Spaans: Departamento del Beni, üüb Aimara: Wini Jach'a Suyu, üüb Ketschua: Wini Suyu, üüb Guarani: Tetãvore Beni) as ian faan dön njüügen departmenten faan Boliiwien. Det hee 422.008 lidj (2012)[1]. At hoodsteed faan't department as Trinidad.