| Loky | |
| Map: | Madagascar rivers.svg |
| Subdivision Type1: | Country |
| Subdivision Name1: | Madagascar |
| Subdivision Type3: | Region |
| Subdivision Name3: | Sava |
| Length: | NaNurl=http://mg.geoview.info/loky,194004496w |
| Source1 Location: | Sava, Madagascar |
| Mouth Location: | Sava Indian Ocean |
| Mouth Coordinates: | -12.7887°N 49.663°W |
The Loky River, also known as the Lokia River, is located in northern Madagascar. It drains in the north-eastern coast, into the Indian Ocean and forms the natural border between Diana and Sava Region.
It is crossed by the RN 5a near Anivorano du Nord. Its mouth is situated in Lokia Bay.