Lake Sartai

Infobox lake
lake_name = Lake Sartai
image_lake = Sartai.jpg
caption_lake =
image_bathymetry =
caption_bathymetry =
location = Rokiškis and Zarasai
coords = coord|55|48|51|N|25|49|10|E|type:waterbody_region:LT|display=inline,title
type =
inflow = Šventoji
outflow = Šventoji
catchment =
basin_countries = Lithuania
length =
width =
area = 13.32 km²
depth =
max-depth = 20.9 m
volume =
residence_time =
shore = 79 km
elevation =
islands = 6
cities =

Lake Sartai is located in Rokiškis and Zarasai municipalities, northeastern Lithuania. The lake has the longest shoreline, streching 79 km, in Lithuania. There are six islands in the lake. River Šventoji flows through it.

The lake is famous for annual horse race that were organised on the frozen lake near Dusetos. Nowadays this tradition is abandoned because of safety requirements. The race is organised at a hippodrome on the shore of the Sartai Lake.