| Magnieu | |
| Commune Status: | Commune |
| Arrondissement: | Belley |
| Canton: | Belley |
| Insee: | 01227 |
| Postal Code: | 01300 |
| Mayor: | Thierry Guittet[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Bugey Sud |
| Coordinates: | 45.7833°N 5.7167°W |
| Elevation M: | 310 |
| Elevation Min M: | 227 |
| Elevation Max M: | 460 |
| Area Km2: | 11.37 |
Magnieu (in French pronounced as /maɲø/) is a commune in the Ain department in eastern France. On 1 January 2019, the former commune of Saint-Champ was merged into Magnieu.[2]