Saint-Sulpice-de-Ruffec (French pronunciation: [sɛ̃ sylpis də ʁyfɛk], literally Saint-Sulpice of Ruffec) is a commune in the Charente department in southwestern France. With 32 inhabitants (2020), it is the least populated commune of Charente.

The commune is situated in the valley of the river Tiarde. The northwest of the commune of Saint-Sulpice-de-Ruffec is watered by the Tiarde; the remaining land includes the valley's high plateau.

The village of Saint Sulpice consists of a collection of houses grouped around the church and overlooking the valley of the Tiarde and a collection of small hamlets: Le Roule at the edge of the town of Couture, les Fantins near Route of Champagne-Mouton-Chenon in the south of the commune, les Raffoux, Chez Bahuet near to the Tiarde, etc.

The commune of Saint-Sulpice-de-Ruffec is 10 miles southeast of Ruffec, there is one main road running through the commune the Aunac to Champagne-Mouton road

The soil is predominantly clay.

Historical population

Year	Pop.	±% p.a.
1968	83	—
1975	67	−3.01%
1982	50	−4.09%
1990	46	−1.04%
1999	35	−2.99%
2009	35	+0.00%
2014	32	−1.78%
2020	32	+0.00%
Source: INSEE

The population of Saint-Sulpice-de-Ruffec is now a mix of French nationals and British.

Agricultural: bovine and crops mainly maize, oil seed rape and sunflowers, diversification into raising of Alpaca s, for wool and breeding

The village of Saint-Sulpice is centred on its 12th-century church. Directly outside the church is a war memorial dedicated to eight people who lost their lives in the first world war (1914–1918).

On the outskirts of the commune of Saint-Sulpice-de-Ruffec, there is a memorial to a French patriot Largeau Gilbert who was shot on 26 June 1944.

• Communes of the Charente department