| Competition: | Segunda División |
| Season: | 1929–30 |
| Winners: | Deportivo Alavés |
| Promoted: | Deportivo Alavés |
| Relegated: | Cultural y Deportiva Leonesa |
| League Topscorer: | Manuel Olivares (23 goals) |
| Matches: | 90 |
| Total Goals: | 349 |
| Prevseason: | 1929 |
| Nextseason: | 1930–31 |
The 1929–30 Segunda División season saw 10 teams participate in the second flight Spanish league. Alavés was promoted to Primera División. Cultural Leonesa was relegated to Tercera División.
| Team | Home city | Stadium | |
|---|---|---|---|
| Club Deportivo Alavés | Vitoria | Mendizorrotza | |
| Real Sporting de Gijón | Gijón | El Molinón | |
| Iberia Sport Club | Zaragoza | Torrero | |
| Sevilla Football Club | Sevilla | Nervión | |
| Real Oviedo Football Club | Oviedo | Teatinos | |
| Valencia Football Club | Valencia | Mestalla | |
| Real Club Deportivo de La Coruña | A Coruña | Riazor | |
| Real Murcia Football Club | Murcia | La Condomina | |
| Real Betis Balompié | Sevilla | Patronato Obrero | |
| Cultural y Deportiva Leonesa | León | Campo de Guzmán |