Canton of Riom
| Riom | |
|---|---|
| Country | France | 
| Region | Auvergne-Rhône-Alpes | 
| Department | Puy-de-Dôme | 
| No. of communes | 5 | 
| Seat | Riom | 
| Government | |
| • Representatives (2021–2028) | Stéphanie Flori-Dutour Jean-Philippe Perret | 
| Area | 63.94 km2 (24.69 sq mi) | 
| Population  (2022) | 23,970 | 
| • Density | 375/km2 (970/sq mi) | 
| INSEE code | 63 25 | 
The canton of Riom is an administrative division of the Puy-de-Dôme department, central France. It was created at the French canton reorganisation which came into effect in March 2015. Its seat is in Riom.