Tarjanne
{{Short description|Lake in Finland}}
{{for|the surname|Tarjanne (surname)}}
{{Infobox lake
| name = Tarjanne
| image =
| alt =
| caption =
| image_bathymetry =
|pushpin_map=Finland
| alt_bathymetry =
| caption_bathymetry =
| location = Ruovesi, Virrat, Mänttä-Vilppula
| coords = {{coord|62|07|N|24|05|E|region:FI_type:waterbody_source:kolossus-fiwiki|display=it}}
| type =
| inflow =
| outflow =
| catchment = Kokemäenjoki
| basin_countries = Finland
| length =
| width =
| area = {{convert|54.872|km2|abbr=on}}
| depth = {{convert|12.66|m|abbr=on}}
| max-depth = {{convert|67.78|m|abbr=on}}
| volume = {{convert|0.695|km3|acre.ft|abbr=on}}
| residence_time =
| shore = {{convert|243.18|km|abbr=on}}
| elevation = {{convert|96.1|m|abbr=on}}
| frozen = December–April
| islands = Siperia, Monosen Kuusinen, Palosaari, Vannottu, Kauttakala
| cities =
}}
Tarjanne (also Tarjannevesi) is a medium-sized lake in Finland. It is situated in the municipalities of Ruovesi, Virrat and Mänttä-Vilppula in the Pirkanmaa region in western Finland. The lake is part of the Kokemäenjoki basin. The main inflows are the lake Vaskivesi and a chain of lakes north of it in the west and a chain of lakes from the lake Pihlajavesi in the north. The lake drains into the Lake Ruovesi in the south.[http://www.jarviwiki.fi/w/index.php?title=Tarjanne_%2835.411.1.001%29&setlang=en Tarjanne in the Jarviwiki Web Service]. Retrieved 2014-03-02. {{in lang|en}}