Långsjön, Tyresta
| Långsjön | |
|---|---|
 | |
| Location | Tyresö Municipality |
| Coordinates | 59°11′45″N 18°17′38″E / 59.19583°N 18.29389°ECoordinates: 59°11′45″N 18°17′38″E / 59.19583°N 18.29389°E |
| Basin countries | Sweden |
Långsjön, Tyresta is a lake of Södermanland, Sweden. It is located in Tyresta National Park.