| Dagneux | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Dagneux (Ain).svg |
| Arrondissement: | Bourg-en-Bresse |
| Canton: | Meximieux |
| Insee: | 01142 |
| Postal Code: | 01120 |
| Mayor: | Jean-Christophe Peguet[1] |
| Term: | 2024 - 2026 |
| Intercommunality: | Côtière à Montluel |
| Coordinates: | 45.8508°N 5.0753°W |
| Elevation M: | 198 |
| Elevation Min M: | 189 |
| Elevation Max M: | 285 |
| Area Km2: | 6.65 |
Dagneux (in French pronounced as /daɲø/; Dagniô) is a commune in the Ain department in eastern France.