| Bay of Saint-Augustin | |
|---|---|
 | |
  Bay of Saint-Augustin | |
| Location | Atsimo-Andrefana, Madagascar |
| Coordinates | 23°30′15″S 43°41′00″E / 23.50417°S 43.68333°E |
| River sources | Onilahy River |
| Ocean/sea sources | Indian Ocean |
| Basin countries | Madagascar |
| Settlements | Anakao, Saint-Augustin |
The Bay of Saint-Augustin is located on the southwestern coast of Madagascar in the region of Atsimo-Andrefana at the Mozambique Channel. This bay is the mouth of the Onilahy River at a distance of 35 kilometres south of Toliara.
