| Rapel Lake | |
| Coords: | -34.1333°N -101°W |
| Type: | reservoir |
| Inflow: | Cachapoal River Tinguiririca River |
| Outflow: | Rapel River |
| Basin Countries: | Chile |
| Pushpin Map: | Chile |
| Area: | 80km2 |
| Elevation: | 110m (360feet) |
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.