| Lake Rapel | |
|---|---|
| Lake type | reservoir |
| Primary inflows | Cachapoal River Tinguiririca River |
| Primary outflows | Rapel River |
| Basin countries | Chile |
| Surface area | 80 km² |
| Surface elevation | 110 m |
Lake Rapel (Spanish: Lago Rapel or Embalse Rapel) is an artificial lake created by a dam on the Rapel River. It is located in the O'Higgins Region, Central Chile.
The reservoir was created with the aim of feeding the Rapel Hydroelectric Plant.