| Treffort-Cuisiat | |
| Image Coat Of Arms: | Blason ville fr Treffort-Cuisiat (Ain).svg |
| Arrondissement: | Bourg-en-Bresse |
| Canton: | Saint-Étienne-du-Bois |
| Insee: | 01426 |
| Postal Code: | 01370 |
| Commune: | Val-Revermont |
| Coordinates: | 46.2722°N 5.3692°W |
| Elevation Min M: | 221 |
| Elevation Max M: | 681 |
| Area Km2: | 39.41 |
| Population: | 2335 |
| Population Date: | 2016 |
| Population Footnotes: | [1] |
Treffort-Cuisiat (in French pronounced as /tʁefɔʁ kɥizja/) is a former commune in the Ain department in eastern France. On 1 January 2016, it was merged into the new commune Val-Revermont.[2]
Treffort and Cuisiat were merged in 1972.
The Sevron formed most of the commune's southwestern border.
Cuisiat is home to the Revermont museum in the old school house.