| Season: | 2018 |
| Nextseason: | 2019 |
The División de Honor de Béisbol 2018 was the 33rd season of the top Spanish baseball league since its establishment and the 73rd Spanish championship overall.
Tenerife Marlins achieved their tenth title.
Miralbueno made their debut in the División de Honor.
| Team | Stadium | City/Area | |
|---|---|---|---|
| Astros Valencia | Campo Federativo del Turia | Valencia | |
| Barcelona | Camp Municipal Carlos Pérez de Rozas | Barcelona | |
| Miralbueno | Campo Municipal de Miralbueno | Zaragoza | |
| Navarra | Instalaciones Deportivas El Soto | Pamplona | |
| Pamplona | Instalaciones Deportivas El Soto | Pamplona | |
| San Inazio Bilbao Bizkaia | Polideportivo El Fango | Bilbao | |
| Sant Boi | Campo Municipal de Béisbol | Sant Boi de Llobregat | |
| Tenerife Marlins | Centro Insular de Béisbol | Puerto de la Cruz | |
| Viladecans | Estadi Olimpic de Viladecans | Viladecans |