| Chassieu | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Chassieu (Rhône).svg |
| Arrondissement: | Lyon |
| Insee: | 69271 |
| Postal Code: | 69680 |
| Mayor: | Jean-Jacques Sellès[1] |
| Term: | 2021 - 2026 |
| Coordinates: | 45.745°N 4.966°W |
| Elevation M: | 204 |
| Elevation Min M: | 190 |
| Elevation Max M: | 238 |
| Area Km2: | 11.57 |
Chassieu (in French pronounced as /ʃasjø/; Chassiô) is a commune in the Metropolis of Lyon in Auvergne-Rhône-Alpes region in eastern France.
Chassieu has been twinned with Coleshill, England, near Birmingham since 1983.