Betroka [ˈbeʈʂu̥k] is a hilly city (commune urbaine) in the Anosy Region in southern Madagascar, and is the source of the Onilahy River.

It is situated at the Route nationale 13, Ihosy to Tolagnaro, at 118 km from Ihosy, 77 km from Isoanala and 203 km from Antanimora Sud.

The true name of the city is Betroky which means tree with a big belly.

The Kalambatritra Reserve is at 55 km East of Betroka.

This Anosy Region location article is a stub.