Sioniac (French pronunciation: [sjɔnjak]; Occitan: Seunhac) is a commune in the Corrèze department of Nouvelle-Aquitaine region in central France.

[4]: 120 Sioniac lies in the southernmost part of the Corrèze department, near the river Dordogne.

[6] In June 859, Rudolf obtained a charter from King Charles the Bald to establish a market in Sioniac.

[6] Other sources say the market could be older as the village was positioned on an ancient north-south trading route between Pay Arnac and Quercy.

[7] There are six semi-round columns with buried bases that have curved volute capitals at their tops and support double arches.