| Ranau | |
| Location: | South Sumatra and Lampung, Indonesia |
| Pushpin Map: | Indonesia#Indonesia Sumatra |
| Type: | Tectonic/ volcanic |
| Inflow: | Warkuk River |
| Outflow: | Komering River |
| Basin Countries: | Indonesia |
| Area: | 125.9km2 |
| Depth: | 174m (571feet)[1] |
| Max-Depth: | 229m (751feet) |
| Volume: | 21.91km3 |
| Elevation: | 540m (1,770feet) |
Lake Ranau is a Pleistocene volcanic[2] crater lake in Sumatra, Indonesia.