| Lake Tetonkaha | |
| Location: | Brookings County, South Dakota |
| Coordinates: | 44.4342°N -96.9925°W |
| Type: | lake |
| Pushpin Map: | South Dakota |
| Pushpin Map Alt: | Location of the lake in South Dakota. |
Lake Tetonkaha is a natural lake in South Dakota, in the United States.
Tetonkaha is a name derived from the Sioux language meaning "standing of the big lodging house".[1]