| Sakay River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Madagascar |
| Subdivision Type3: | Region |
| Subdivision Name3: | Bongolava |
| Mouth: | Mahajilo River |
| Mouth Coordinates: | -19.4017°N 46.1639°W |
| Mouth Elevation: | 680m (2,230feet) |
| River System: | Tsiribihina River |
| Tributaries Left: | Lily River |
The Sakay River is a waterway in Bongolava, Madagascar, and passes through the towns of Ankadinondry Sakay and Mahasolo.
It has its sources East of Tsiroanomandidy in a plaine at 1400m altitude and its mouth is in the Mahajilo River.
An affluent is the Lily River that has its sources in the Kavitaha Lake in Ampefy (Itasy).