Vinaninony - Atsimo (Vinaninoy Sud) is a town and commune in Madagascar.

It belongs to the district of Faratsiho, which is a part of Vakinankaratra Region.

Primary and junior level secondary education are available in town.

The majority 89% of the population of the commune are farmers, while an additional 10% receives their livelihood from raising livestock.

[2] Vinaninoy Sud is situated at 45km north of Antsirabe and 18km south of Faratsiho on the National road 43.