1929 Segunda División Grupo B
The 1929 Segunda División Grupo B season saw 10 teams participate in the third level Spanish league. Cultural Leonesa and Real Murcia were promoted to the 1929–30 Segunda División. There were no teams relegated to another division. The following season this division renamed the Tercera División.
Stadia and locations
| Club | City | Stadium | Capacity |
| Cultural y Deportiva Leonesa | León | Campo de Guzmán | - |
| Real Murcia Football Club | Murcia | La Condomina | - |
| Club Deportivo Castellón | Castellón de la Plana | Campo del Sequiol | 6.000 |
| Gimnástica de Torrelavega | Torrelavega | El Malecón | - |
| Real Zaragoza Club Deportivo | Zaragoza | Campo de la calle del Asalto | - |
| Real Valladolid Deportivo | Valladolid | Estadio de la Sociedad Taurina | 4.000 |
| Club Atlético Osasuna | Pamplona | Campo de San Juan | 20.000 |
| Tolosa Football Club | Tolosa | Berazubi | - |
| Baracaldo Football Club | Baracaldo | Lasesarre | - |
| Cartagena Football Club | Cartagena | Stadium Cartagenero | - |
League table
| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts |
| 1 | Cultural Leonesa | 18 | 13 | 0 | 5 | 55 | 31 | +24 | 26 |
| 2 | Murcia | 18 | 11 | 2 | 5 | 56 | 37 | +19 | 24 |
| 3 | Castellón | 18 | 11 | 1 | 6 | 54 | 34 | +20 | 23 |
| 4 | Gimnástica Torrelavega | 18 | 8 | 4 | 6 | 35 | 38 | −3 | 20 |
| 5 | Zaragoza | 18 | 9 | 2 | 7 | 45 | 41 | +4 | 20 |
| 6 | Valladolid | 18 | 9 | 1 | 8 | 44 | 46 | −2 | 19 |
| 7 | Osasuna | 18 | 6 | 3 | 9 | 35 | 41 | −6 | 15 |
| 8 | Tolosa | 18 | 5 | 2 | 11 | 26 | 46 | −20 | 12 |
| 9 | Barakaldo | 18 | 4 | 3 | 11 | 34 | 50 | −16 | 11 |
| 10 | Cartagena | 18 | 3 | 4 | 11 | 24 | 44 | −20 | 10 |