The Canton of Montdidier is a former canton situated in the department of the Somme and in the Picardie region of northern France.

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

It consisted of 34 communes,[1] which joined the canton of Roye in 2015.

The altitude varies from 40m (Hargicourt) to 155m (Villers-Tournelle) for an average of 121m.

This Somme geographical article is a stub.