| Ceyzériat | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Ceyzériat (Ain).svg |
| Arrondissement: | Bourg-en-Bresse |
| Canton: | Ceyzériat |
| Insee: | 01072 |
| Postal Code: | 01250 |
| Mayor: | Jean-Yves Flochon[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Bassin de Bourg-en-Bresse |
| Coordinates: | 46.1788°N 5.3238°W |
| Elevation M: | 338 |
| Elevation Min M: | 240 |
| Elevation Max M: | 585 |
| Area Km2: | 9.36 |
Ceyzériat (in French pronounced as /sɛzeʁja/) is a commune in the Ain department, Auvergne-Rhône-Alpes region in eastern France. Ceyzériat station has rail connections to Bourg-en-Bresse and Oyonnax.
Hippolyte Paul Jayr, twice minister during the July Monarchy, was mayor of the commune at the end of the 19th century. The French archaeologist and assyriologist Maurice Pézard (1876–1923) died in this commune.
Ceyzériat has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Ceyzériat is . The average annual rainfall is with November as the wettest month. The temperatures are highest on average in July, at around, and lowest in January, at around . The highest temperature ever recorded in Ceyzériat was on 4 August 2022; the coldest temperature ever recorded was on 20 December 2009.
| 1945 | 1976 | Émile Bouvard | Rad. | General councillor for the Canton of Ceyzériat | ||
| March 1977 | March 1983 | Albert Métras | DVD | |||
| March 1983 | June 1995 | Camille Cornier | ||||
| June 1995 | March 2001 | Jacques Michon | ||||
| March 2001 | Incumbent | Jean-Yves Flochon | UMP-LR | Departmental councillor |