Saint-Martin-sur-Ouanne is a former commune in the Yonne department in Bourgogne-Franche-Comté in north-central France. On 1 January 2016, it was merged into the new commune of Charny-Orée-de-Puisaye. Geography The village lies on the right bank of the Ouanne, which flows northward through the commune. See also Communes of the Yonne department References Former communes of Yonne