2005–06 Tercera División
During the 2005-06 season, the Tercera División—the fourth tier of professional football in Spain—consisted of eighteen regional groups.
Classification
| Key to colors in league table: |
| Play-off for promotion |
| Direct relegation |
During the 2005-06 season, the Tercera División—the fourth tier of professional football in Spain—consisted of eighteen regional groups.