| Vieu-d'Izenave | |
| Commune Status: | Commune |
| Arrondissement: | Nantua |
| Canton: | Plateau d'Hauteville |
| Insee: | 01441 |
| Postal Code: | 01430 |
| Mayor: | Dominique Delagneau[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Haut-Bugey Agglomération |
| Coordinates: | 46.0817°N 5.53°W |
| Elevation M: | 380 |
| Elevation Min M: | 540 |
| Elevation Max M: | 1103 |
| Area Km2: | 23.73 |
Vieu-d'Izenave (in French pronounced as /vjø diznav/, literally Vieu of Izenave; Viu-d’Isenâva) is a commune in the Ain department in eastern France.
Vieu-d'Izenave has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Vieu-d'Izenave 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 Vieu-d'Izenave was on 31 July 2020; the coldest temperature ever recorded was on 7 February 2012.