1997–98 Segunda División
The 1997–98 Segunda División season saw 22 teams participate in the second flight Spanish league. Deportivo Alavés, CF Extremadura and Villarreal CF were promoted to Primera División. Elche CF, Real Jaén, Xerez CD and Levante UD were relegated to Segunda División B.
The league was expanded to 22 teams due to reduction of Primera División to 20 teams.
Teams
| Team | Home city | Stadium |
| Albacete | Albacete | Carlos Belmonte |
| Alavés | Vitoria-Gasteiz | Mendizorrotza |
| Atlético Madrid B | Madrid | Cerro del Espino |
| Badajoz | Badajoz | El Vivero |
| Eibar | Eibar | Ipurua |
| Elche | Elche | Martínez Valero |
| Extremadura | Almendralejo | Francisco de la Hera |
| Hércules | Alicante | José Rico Pérez |
| Real Jaén | Jaén | La Victoria |
| Las Palmas | Las Palmas | Insular |
| Leganés | Leganés | Luis Rodríguez de Miguel |
| Levante | Valencia | Nou Estadi |
| Lleida | Lleida | Camp d'Esports |
| Logroñés | Logroño | Las Gaunas |
| Numancia | Soria | Los Pajaritos |
| Osasuna | Pamplona | El Sadar |
| Ourense | Ourense | O Couto |
| Rayo Vallecano | Madrid | Vallecas |
| Sevilla | Seville | Ramón Sánchez Pizjuán |
| Toledo | Toledo | Salto del Caballo |
| Villarreal | Villarreal | El Madrigal |
| Xerez | Jerez de la Frontera | Chapín |
Teams by Autonomous Community
| Autonomous community | Number of teams | Teams | |
| 1 | 4 | Elche, Hércules, Levante, Villarreal | |
| 2 | 3 | Real Jaén, Sevilla, Xerez | |
| 2 | 3 | Atlético Madrid B, Leganés, Rayo Vallecano | |
| 4 | 2 | Alavés, Eibar | |
| 4 | 2 | Albacete, Toledo | |
| 4 | 2 | Badajoz, Extremadura | |
| 7 | 1 | Las Palmas | |
| 7 | 1 | Numancia | |
| 7 | 1 | Lleida | |
| 7 | 1 | Ourense | |
| 7 | La Rioja | 1 | Logroñés |
| 7 | 1 | Osasuna |