| Cleyzieu | |
| Commune Status: | Commune |
| Arrondissement: | Belley |
| Canton: | Ambérieu-en-Bugey |
| Insee: | 01107 |
| Postal Code: | 01230 |
| Mayor: | Jean Peysson[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Plaine de l'Ain |
| Coordinates: | 45.9°N 5.4333°W |
| Elevation M: | 594 |
| Elevation Min M: | 440 |
| Elevation Max M: | 927 |
| Area Km2: | 7.82 |
Cleyzieu (in French pronounced as /klɛzjø/) is a commune in the Ain department in eastern France.