Tuusulanjärvi

Infobox lake
lake_name = Tuusulanjärvi
image_lake =
caption_lake =
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location = Southern Finland
coords = coord|60|26|N|25|03|E|region:FI_type:waterbody_source:GNS-enwiki|display=inline,title
type =
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outflow =
catchment =
basin_countries = Finland
length =
width =
area = 6 km²
depth =
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residence_time =
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Tuusulanjärvi is a lake on the border of the municipalities of Tuusula and Järvenpää in southern Finland. The lake has an area of 6.0 km². Since the beginning of the 20th century the shores of Tuusulanjärvi has been an artist's colony. The houses of Jean Sibelius, Juhani Aho, Pekka Halonen, Eero Järnefelt, Joonas Kokkonen, and Aleksis Kivi are on the edges of the lake.