Śniardwy

{{Short description|Lake in Poland}}

{{Infobox body of water

| name = Śniardwy

| image = Jezioro Śniardwy - Niedźwiedzi Róg 1.jpg

| caption = Śniardwy in Niedźwiedzi Róg

| image_bathymetry =

| caption_bathymetry =

| location = Masurian Lake District

| pushpin_map = Warmian-Masurian Voivodeship#Poland

| coords = {{Coord|53|46|N|21|45|E|region:PL_type:waterbody|display=inline,title}}

| type =Glacial lake

| inflow =

| outflow =

| catchment =

| basin_countries = Poland

| length = {{convert|22.1|km|abbr=on}}

| width = {{convert|13.4|km|abbr=on}}

| area = {{convert|113.8|km2|abbr=on}}

| depth = {{convert|6.5|m|abbr=on}}

| max-depth = {{convert|23|m|abbr=on}}

| volume = {{convert|0.65|km3|acre.ft|abbr=on}}

| residence_time =

| shore =

| elevation = {{convert|117|m|abbr=on}}

| islands = 8

| cities =

}}

Śniardwy ({{langx|de|{{audio|Der Spirdingsee.ogg|der Spirdingsee}}}}){{cite book |url=https://books.google.com/books?id=OtBqAgAAQBAJ&q=spirdingsee&pg=PT16|title= Ferne und Nähe|last=Bednarz |first=Klaus |date= June 2010|author-link=Klaus Bednarz |language=de |isbn=978-3-498-00635-8}} is a lake in the Masurian Lake District of the Warmian-Masurian Voivodeship, Poland.

At {{convert|113.8|km2|sqmi}}, Śniardwy is the largest lake in Poland. It was also the largest lake in Prussia and in Germany, when Warmia-Masuria was under German rule and formed the southern part of East Prussia.{{cite EB1911|wstitle=East Prussia |volume= 8 |short=x}} It is {{convert|22.1|km|mi}} long and {{convert|13.4|km|mi}} wide. The maximum depth is 23 metres (75 feet). There are eight islands on the Śniardwy lake.[http://wldb.ilec.or.jp/Details/lake/EUR-30 Lake Śniardwy at the International Lake Environment Committee webpage]