| Coords | 34°08′S 71°30′W |
|---|---|
| Inflow | Cachapoal River Tinguiririca River |
| Outflow | Rapel River |
| Basin countries | Chile |
| Area | 80 km2 (31 sq mi) |
| Elevation | 110 m (360 ft) |
Rapel Lake (Spanish: Lago Rapel or Embalse Rapel) is an artificial lake created by a dam on the Rapel River. It is located in the Libertador General Bernardo O'Higgins Region, Central Chile.
The reservoir was created with the aim of feeding the Rapel Hydroelectric Plant.