| Blanzy-lès-Fismes | |
| Commune Status: | Commune |
| Arrondissement: | Soissons |
| Canton: | Fère-en-Tardenois |
| Insee: | 02091 |
| Postal Code: | 02160 |
| Mayor: | Dominique Ferte[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Val de l'Aisne |
| Coordinates: | 49.3392°N 3.6739°W |
| Elevation Min M: | 80 |
| Elevation Max M: | 182 |
| Area Km2: | 5.27 |
Blanzy-lès-Fismes (pronounced as /fr/, literally Blanzy near Fismes) is a commune in the department of Aisne in Hauts-de-France in northern France.