Laatokka

Lake Ladoga
Map of Lake Ladoga
Location	Northwestern Russia (Leningrad Oblast and the Republic of Karelia)
Coordinates	61°00′N 31°30′E / 61.000°N 31.500°E / 61.000; 31.500Coordinates: 61°00′N 31°30′E / 61.000°N 31.500°E / 61.000; 31.500
Primary inflows	Svir, Volkhov, Vuoksi
Primary outflows	Neva
Catchment area	276,000 km2 (107,000 sq mi)
Basin countries	Russia, Finland
Max. length	219 km (136 mi)
Max. width	138 km (86 mi)
Surface area	17,700 km2 (6,800 sq mi)
Average depth	51 m (167 ft)
Max. depth	230 m (750 ft)
Water volume	837 km3 (201 cu mi)
Surface elevation	5 m (16 ft)
Islands	about 660 (including Valaam)
Settlements	see list

Lake Ladoga (Russian: Ла́дожское о́зеро, tr. Ladozhskoye ozero, IPA: [ˈladəʂskəjə ˈozʲɪrə] or Russian: Ла́дога, tr. Ladoga, IPA: [ˈladəgə]; Finnish: Laatokka [earlier in Finnish Nevajärvi]; Livvi-Karelian: Luadogu; Veps: Ladog, Ladoganjärv) is a freshwater lake located in the Republic of Karelia and Leningrad Oblast in northwestern Russia just outside the outskirts of Saint Petersburg.

It is the largest lake entirely in Europe, and the 14th largest freshwater lake by area in the world. Ladoga Lacus, a methane lake on Saturn's moon Titan, is named after the lake.

In one of Nestor's chronicles from the 12th century he mentions a lake called "the Great Nevo", a clear link to the Neva River and, possibly furthermore, to Finnish nevo "sea" or neva "bog, quagmire".