2018–19 LEB Oro season
The 2018–19 LEB Oro season was the 23rd season of the Spanish basketball second league. It started on 5 October 2018 with the first round of the regular season and ended on 2 June 2019 with the final.
Format changes
On 2 June 2018, the General Assembly of the Spanish Basketball Federation agreed some changes in the competition format:- The three last qualified teams will be relegated to LEB Plata.
- The semifinals and the final will be played as a Final Four, where the winner will be promoted to Liga ACB.
Teams
Promotion and relegation (pre-season)
A total of 18 teams contested the league, including 14 sides from the 2017–18 season, two relegated from the 2017–18 ACB and two promoted from the 2017–18 LEB Plata.;Teams relegated from Liga ACB
- RETAbet Bilbao Basket
- Real Betis Energía Plus
- Covirán Granada
- Real Canoe NC
Venues and locations
| Team | Home city | Arena | Capacity |
| Barça Lassa B | Sant Joan Despí | Ciutat Esportiva Joan Gamper | 472 |
| Cáceres Patrimonio de la Humanidad | Cáceres | Multiusos Ciudad de Cáceres | |
| Carramimbre CBC Valladolid | Valladolid | Pisuerga | |
| CB Prat | El Prat de Llobregat | Pavelló Joan Busquets | 500 |
| Chocolates Trapa Palencia | Palencia | Pabellón Municipal | |
| Club Melilla Baloncesto | Melilla | Pabellón Javier Imbroda Ortiz | |
| Covirán Granada | Granada | Palacio de Deportes | |
| Iberojet Palma | Palma | Son Moix | |
| ICG Força Lleida | Lleida | Pavelló Barris Nord | |
| Levitec Huesca | Huesca | Palacio Municipal de Huesca | |
| Leyma Coruña | A Coruña | Pazo dos Deportes de Riazor | |
| Liberbank Oviedo Baloncesto | Oviedo | Polideportivo de Pumarín | |
| Real Betis Energía Plus | Seville | San Pablo | |
| RETAbet Bilbao Basket | Bilbao | Bilbao Arena | |
| Río Ourense Termal | Ourense | Pazo Paco Paz | |
| Sáenz Horeca Araberri | Vitoria-Gasteiz | Mendizorrotza | |
| TAU Castelló | Castellón de la Plana | Pabellón Ciutat de Castelló | |
| ZTE Real Canoe NC | Madrid | Polideportivo Pez Volador | 800 |