| Competition: | Slovenian Third League |
| Season: | 2004–05 |
| Matches: | 364 |
| Total Goals: | 1198 |
| League Topscorer: | Matej Golob (24 goals) |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
The 2004–05 Slovenian Third League was the 13th season of the Slovenian Third League, the third highest level in the Slovenian football system.