| Laut Tawar | |
| Location: | Aceh, Indonesia |
| Type: | Tectonic |
| Pushpin Map: | Indonesia Aceh |
| Outflow: | Peusangan River |
| Part Of: | Peusangan basin |
| Basin Countries: | Indonesia |
| Area: | 70km2 |
| Max-Depth: | 80m (260feet) |
| Elevation: | 1100m (3,600feet) |
Lake Laut Tawar is a lake in Central Aceh Regency of Aceh Province, Indonesia.[1] It is located at . The name Indonesian: Laut Tawar literally means "freshwater sea".
The lake is an important ecosystem to its endemic marine species, such as Rasbora tawarensis fish.[2]