The Canton of Tonnay-Boutonne is a former canton of the Charente-Maritime department in France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 11 communes, which joined the canton of Saint-Jean-d'Angély in 2015. It had 3,417 inhabitants (2012). The lowest point is the river Boutonne near Puy-du-Lac (1 m), the highest point is at Nachamps at 66 m. The seat of the canton was Tonnay-Boutonne.

The canton comprised the following communes:

Year	Population
1962	2,786
1968	3,120
1975	2,948
1982	2,824
1990	2,862
1999	3,013
2008	3,237

• Cantons of the Charente-Maritime department

45°58′N 0°42′W / 45.967°N 0.700°W / 45.967; -0.700