| Hongcheng Lake | |
| Location: | Haikou, Hainan, China |
| Coordinates: | 20.0063°N 110.3477°W |
| Type: | Urban lake |
| Outflow: | Haikou Bay |
| Pushpin Map: | Hainan |
Hongcheng Lake is a lake in Haikou, Hainan, China. It was renovated around 2017 to 2018.[1] It has three islands. Two small, and one, at the west side, is larger with short bridge access and an old, dilapidated building on it.