| Troësnes | |
| Commune Status: | Commune |
| Arrondissement: | Soissons |
| Canton: | Villers-Cotterêts |
| Insee: | 02749 |
| Postal Code: | 02460 |
| Mayor: | Nathalie Gautier[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Retz en Valois |
| Coordinates: | 49.1939°N 3.1706°W |
| Elevation M: | 70 |
| Elevation Min M: | 66 |
| Elevation Max M: | 141 |
| Area Km2: | 2.75 |
Troësnes (in French pronounced as /tʁɔɛn/) is a commune in the Aisne department in Hauts-de-France in northern France.[2]