| Seigy | |
| Commune Status: | Commune |
| Arrondissement: | Romorantin-Lanthenay |
| Canton: | Saint-Aignan |
| Insee: | 41239 |
| Postal Code: | 41110 |
| Mayor: | Françoise Plat[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Val-de-Cher-Controis |
| Coordinates: | 47.2553°N 1.3989°W |
| Elevation M: | 80 |
| Elevation Min M: | 67 |
| Elevation Max M: | 137 |
| Area Km2: | 8.18 |
Seigy (in French pronounced as /sɛʒi/) is a commune in the Loir-et-Cher department of central France.