| Competition: | Slovenian Third League |
| Season: | 2005–06 |
| Matches: | 364 |
| Total Goals: | 1088 |
| League Topscorer: | Matej Golob (17 goals) |
| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
The 2005–06 Slovenian Third League was the 14th season of the Slovenian Third League, the third highest level in the Slovenian football system.