| Nalzen | |
| Commune Status: | Commune |
| Arrondissement: | Pamiers |
| Canton: | Pays d'Olmes |
| Insee: | 09215 |
| Postal Code: | 09300 |
| Mayor: | Patrick Ferrie[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays d'Olmes |
| Coordinates: | 42.9183°N 1.7589°W |
| Elevation M: | 633 |
| Elevation Min M: | 520 |
| Elevation Max M: | 969 |
| Area Km2: | 5.5 |
Nalzen is a commune in the Ariège department in southwestern France.