The Canton of Séderon is a former canton located in the Department of Drôme, in the Arrondissement of Nyons.

It had 2,059 inhabitants (2012).

[1] It was disbanded following the French canton reorganisation which came into effect in March 2015.

It consisted of 18 communes,[1] which joined the canton of Nyons et Baronnies in 2015.

[2] It comprised the following communes:[1]