The 2018–19 Segunda División Femenina de Fútbol was the 18th edition of the Spanish women's football second-tier league.
Each group played their season as home and away round-robin format.
All others (depending on the perception) remain in/are relegated to the 2019–20 Primera Nacional which becomes the third tier, retaining its setup of 7 groups of 14 teams.
The winner of the Canarian final qualified to the promotion stage.
After the refusal of Granadilla B, Tacuense was allowed to play the playoff.