| Competition: | Slovenian Third League |
| Season: | 2002–03 |
| Total Goals: | 2192 |
| Prevseason: | 2001–02 |
| Nextseason: | 2003–04 |
The 2002–03 Slovenian Third League was the 11th season of the Slovenian Third League, the third highest level in the Slovenian football system.