| Competition: | Slovenian Third League |
| Season: | 2013–14 |
| Relegated: | Kamnik |
| Matches: | 364 |
| Total Goals: | 1238 |
| League Topscorer: | Roman Gostan (25 goals) |
| Biggest Away Win: | Kamnik 0–16 Izola |
| Highest Scoring: | Kamnik 0–16 Izola |
| Prevseason: | 2012–13 |
| Nextseason: | 2014–15 |
The 2013–14 Slovenian Third League season began on 24 August 2013 and ended on 7 June 2014.
| Club | Location | Stadium | 2012–13 position | |
|---|---|---|---|---|
| Beltinci | Beltinci | Beltinci Sports Park | 4th | |
| Bistrica | Slovenska Bistrica Sports Park | 10th | ||
| Čarda | Martjanci | ŠRC Martjanci | 6th | |
| Drava | Ptuj | Ptuj City Stadium | 1st, Ptuj | |
| Dravinja | Slovenske Konjice | Dobrava Stadium | 10th, 2.SNL | |
| Grad | Grad | Igrišče Pod gradom | 11th | |
| Ljutomer | Ljutomer | Ljutomer Sports Park | 7th | |
| Malečnik | Malečnik | Berl Sports Centre | 9th | |
| Nafta 1903 | Lendava | Lendava Sports Park | 1st, Pomurska | |
| Odranci | Odranci | ŠRC Odranci | 2nd | |
| Rakičan | Rakičan | Grajski Park Stadium | 13th | |
| Šentjur | Šentjur | Šentjur Sports Park | 1st, Styrian | |
| Šmarje | Šmarje pri Jelšah | Sports Park | 3rd | |
| Tromejnik | Kuzma | Kuzma Football Stadium | 8th |
| Club | Location | Stadium | 2012–13 position | |
|---|---|---|---|---|
| Adria | Miren | Pri Štantu Stadium | 4th | |
| Ajdovščina Škou | Ajdovščina | Ajdovščina Stadium | 2nd, Littoral1 | |
| Brda | Dobrovo | Vipolže Stadium | 7th | |
| Ivančna Gorica | Ivančna Gorica | Ivančna Gorica Stadium | 8th | |
| Izola | Izola City Stadium | 3rd | ||
| Jadran | Dekani | Dekani Sports Park | 10th | |
| Jezero | Medvode | Ob Sori Stadium | 1st, Ljubljana | |
| Kamnik | Kamnik | Stadion Prijateljstva | 12th | |
| Rudar | Trbovlje | Rudar Stadium | 9th | |
| Sava | Kranj | Stražišče Sports Park | 1st, Carniolan | |
| Tabor | Sežana | Rajko Štolfa Stadium | 5th | |
| Tolmin | Tolmin | Brajda Sports Park | 2nd | |
| Zagorje | Zagorje ob Savi | Zagorje City Stadium | 6th | |
| Zarica | Kranj | Zarica Sports Park | 11th |