| Gannay-sur-Loire | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Gannay-sur-Loire 03.svg |
| Arrondissement: | Moulins |
| Canton: | Dompierre-sur-Besbre |
| Insee: | 03119 |
| Postal Code: | 03230 |
| Mayor: | Stéphanie Bel[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Moulins Communauté |
| Coordinates: | 46.7319°N 3.6111°W |
| Elevation M: | 202 |
| Elevation Min M: | 193 |
| Elevation Max M: | 240 |
| Area Km2: | 32.29 |
Gannay-sur-Loire (in French pronounced as /ɡanɛ syʁ lwaʁ/, literally Gannay on Loire) is a commune in the Allier department in central France.