| Competition: | Segunda División Grupo B |
| Season: | 1929 |
| Winners: | Cultural Leonesa |
| Promoted: | Cultural Leonesa Real Murcia |
| Nextseason: | 1929–30 (3ª) |
The 1929 Segunda División Grupo B season saw 10 teams participate in the first edition of the national third-level Spanish football league (although officially it was a section of the second level). Cultural Leonesa and Real Murcia were promoted to the 1929–30 Segunda División. There were no teams relegated. This division was renamed as the Tercera División for the following season.
| Club | City | Stadium | Capacity | |
|---|---|---|---|---|
| Campo de Guzmán | - | |||
| - | ||||
| 6.000 | ||||
| - | ||||
| Campo de la calle del Asalto | - | |||
| 4.000 | ||||
| 20.000 | ||||
| - | ||||
| - | ||||
| - |
| width=20 | Pos | width=185 | Team | width=20 | Pld | width=20 | W | width=20 | D | width=20 | L | width=20 | GF | width=20 | GA | width=20 | GD | width=20 | 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 |