| SF | Claret Askartza B | CW 9802 | 8-6 | 21-04-2018 | 14:00 | Play-off Liga EH Masculina 01-04 | Askartza |
| SF | DN Portugalete | Urbat Urkotronik | 9-6 | 22-04-2018 | 13:15 | Play-off Liga EH Masculina 01-04 | Municipal |
| SF2 | Leioa WLB B | WP 9802 B | 5-8 | 21-04-2018 | 13:35 | Play-off Liga EH Femenina 01-04 | Sakoneta |
| SF1 | Urbat IKE | Claret Askartza | 5-11 | 21-04-2018 | 20:15 | Play-off Liga EH Femenina 01-04 | Orbea |
