The 2017–18 Segunda División Femenina de Fútbol was the 2017–18 edition of the Spanish women's football second-tier league.
The Segunda División was divided into seven regional groups.
Each group played their season as home and away round-robin format.
The group of four teams played a double-leg knockout format, while the group of three teams played with a double-legged round-robin format.
The winner of the Canarian final will qualify to the promotion stage.