| Illfurth | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville d'Illfurth (68).svg |
| Arrondissement: | Altkirch |
| Canton: | Altkirch |
| Insee: | 68152 |
| Postal Code: | 68720 |
| Mayor: | Christian Sutter[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 47.6733°N 7.2658°W |
| Elevation M: | 260 |
| Elevation Min M: | 255 |
| Elevation Max M: | 391 |
| Area Km2: | 9.16 |
Illfurth (in French pronounced as /ilfyʁt/; German: Illfurt) is a commune in the Haut-Rhin department in Alsace in north-eastern France. It lies on the river Ill and the Rhône–Rhine Canal, southwest of Mulhouse.