| SF1 | Claret Askartza | Urbat IKE | 17-9 | 14-04-2018 | 18:00 | Play-off Liga EH Femenina 01-04 | Askartza |
| SF2 | WP 9802 B | Leioa WLB B | 17-6 | 15-04-2018 | 12:00 | Play-off Liga EH Femenina 01-04 | UPNA |
| SF2 | CD Bilbao | CNW Sestao Taker | 9-1 | 15-04-2018 | 15:30 | Play-off Liga EH Femenina 05-08 | C. Deportivo |
| SF1 | Bidasoa XXI | Larraina | 9-5 | 15-04-2018 | 16:15 | Play-off Liga EH Femenina 05-08 | Azken Portu |
| SF1 | CW Castellae | Getxo IW | 16-10 | 14-04-2018 | 15:45 | Play-off Liga EH Femenina 09-12 | Capiscol |
