| Lay | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Lay (Loire).svg |
| Arrondissement: | Roanne |
| Canton: | Le Coteau |
| Insee: | 42118 |
| Postal Code: | 42470 |
| Mayor: | Jean-Marc Giraud[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays entre Loire et Rhône |
| Coordinates: | 45.9564°N 4.2189°W |
| Elevation M: | 460 |
| Elevation Min M: | 339 |
| Elevation Max M: | 592 |
| Area Km2: | 12.85 |
Lay is a commune in the Loire department in central France.
