| Fanjeaux | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Fanjeaux (Aude).svg |
| Arrondissement: | Carcassonne |
| Canton: | La Piège au Razès |
| Insee: | 11136 |
| Postal Code: | 11270 |
| Mayor: | Aurélien Passemar[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Piège Lauragais Malepère |
| Coordinates: | 43.1878°N 2.0344°W |
| Elevation M: | 363 |
| Elevation Min M: | 155 |
| Elevation Max M: | 395 |
| Area Km2: | 25.49 |
Fanjeaux (in French pronounced as /fɑ̃ʒo/; Occitan (post 1500);: Fanjaus) is a commune in the Aude department in southern France.
Fanjeaux is located west of Carcassonne. Between 1206 and 1215, Fanjeaux was the home of Saint Dominic, the founder of the Roman Catholic Church's Dominican Order, who preached to the Cathars in the area (see Catharism).