The Canton of Pleumartin is a former canton situated in the Vienne département of France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had a total of 6,744 inhabitants (2012, without double counting).

The Canton of Pleumartin comprised 9 communes:

Historical population

Year	Pop.	±%
1962	6,658	—
1968	7,058	+6.0%
1975	6,514	−7.7%
1982	6,351	−2.5%
1990	6,227	−2.0%
1999	6,215	−0.2%
2006	6,514	+4.8%
2012	6,744	+3.5%

• Arrondissement of Châtellerault
• Cantons of the Vienne department
• Communes of the Vienne department

46°45′57″N 0°45′26″E / 46.76583°N 0.75722°E / 46.76583; 0.75722