| Brégnier-Cordon | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Brégnier-Cordon 01.svg |
| Arrondissement: | Belley |
| Canton: | Belley |
| Insee: | 01058 |
| Postal Code: | 01300 |
| Mayor: | Thierry Vergain[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Bugey Sud |
| Coordinates: | 45.65°N 5.6167°W |
| Elevation M: | 226 |
| Elevation Min M: | 203 |
| Elevation Max M: | 460 |
| Area Km2: | 11.05 |
Brégnier-Cordon (in French pronounced as /bʁeɲe kɔʁdɔ̃/) is a commune in the Ain department in eastern France.
Brégnier-Cordon lies 20 km south of Belley. It is located in a bend of the Rhône on the edge of Savoie (on the southeast) and Isère (on the west). The bridge at Cordon joins the commune to Aoste, in the Isère department. It borders the communes of Groslée-Saint-Benoît, Prémeyzel, Izieu, Murs-et-Gélignieux, Champagneux, Saint-Genix-les-Villages, Aoste and Les Avenières-Veyrins-Thuellin.
The territory of the commune lies principally in the plain of the Rhône at the foot of the Jura mountains. On the north, it is bordered by the Gland.
The Lake and Falls of Glandieu are located in the commune near the hamlet of the same name.
The commune is on the D19 highway coming from Sault-Brénaz and going to the northwest. This becomes the D992 south of the commune and heads north toward Belley. The D10 passes north of the commune, connecting the D19 to the D992 without following the Rhône.
The closest motorway is the A43, accessed at the Chimilin - Les Abrets exit a few kilometers south of the commune.