Saint-Martin-sur-Ouanne (French pronunciation: [sɛ̃ maʁtɛ̃ syʁ wan], lit.

'Saint-Martin on 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.

[2] The village lies on the right bank of the Ouanne, which flows northward through the commune.

This Yonne geographical article is a stub.