| Saint-Léger-lès-Authie | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Saint-Léger-lès-Authie.svg |
| Arrondissement: | Péronne |
| Canton: | Albert |
| Insee: | 80705 |
| Postal Code: | 80560 |
| Mayor: | Jean-Marie Guenez[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays du Coquelicot |
| Coordinates: | 50.1269°N 2.5131°W |
| Elevation M: | 96 |
| Elevation Min M: | 87 |
| Elevation Max M: | 157 |
| Area Km2: | 4.29 |
Saint-Léger-lès-Authie (in French pronounced as /sɛ̃ leʒe lɛz‿oti/, literally Saint-Léger near Authie; Saint-Njèr-lès-Eutie) is a commune in the Somme department in Hauts-de-France in northern France.
The commune is situated some 17miles northeast of Amiens, on the D152 road and on the banks of the Authie, the border with the Pas-de-Calais.