Stensjön, Lake in Tyresta National Park, Sweden

Stensjön is a lake in the Tyresö area near Stockholm and forms part of a protected natural landscape. The water is surrounded by forest with walking trails running around the shoreline for visitors to explore.

Stensjön lies in the Åvaån water system, whose outflow passes through Lanan, a bay dammed from the lake, to a sluice above Nedre dammen. At Nedre dammen stands Stensjödal, the original miller's residence from the late 1700s; the watermill itself, Åva kvarn, stood by the dam south of Nedre dammen, and only its foundation and the old bridge remain. The forest around the lake was devastated by the great Tyresta National Park fire of 1999.

The lake draws people who enjoy spending time outdoors observing birds and hiking through natural surroundings. Visitors come regularly to experience the quiet and walk the paths along the water's edge.

The area can be explored on marked trails that are easy to follow and accessible from several starting points. Parking is available nearby so visitors can leave their car and begin walking.

Test fishing in Stensjön has recorded perch, ruffe, pike, roach, rudd and vendace, so the lake holds a broader fish community than its pike alone suggest. The catchment around it is mostly forest, and the outflow runs through Åvaån toward the Baltic.