| Lake Ladoga | |
|---|---|
 | |
.jpg)  Location in Russia | |
 Large-scale map | |
| Location | Northwestern Russia (Leningrad Oblast and the Republic of Karelia) |
| Coordinates | 61°00′N 31°30′E / 61.000°N 31.500°E |
| Primary inflows | Svir, Volkhov, Vuoksi |
| Primary outflows | Neva |
| Catchment area | 276,000 km2 (107,000 sq mi) |
| Basin countries | Russia Finland (minor) |
| Max. length | 219 km (136 mi) |
| Max. width | 138 km (86 mi) |
| Surface area | 17,891 km2 (6,908 sq mi) |
| Average depth | 47.3 m (155 ft) |
| Max. depth | 230–260 m (750–850 ft) |
| Water volume | 837 km3 (201 cu mi) |
| Surface elevation | 5 m (16 ft) |
| Islands | about 660 (including Valaam) |
| Settlements | see list |
 | |
Lake Ladoga (/ˈlædəɡə/; Russian: Ла́дожское о́зеро, romanized: Ladozhskoye ozero, IPA: [ˈladəʂskəjə ˈozʲɪrə] or [Ла́дога] Error: {{Lang}}: invalid parameter: |3= (help), IPA: [ˈladəɡə]; Finnish: Laatokka [earlier in Finnish Nevajärvi]; Livvi: Luadogu; Veps: Ladog, Ladoganjärv) is a freshwater lake located in the Republic of Karelia and Leningrad Oblast in northwestern Russia, in the vicinity of Saint Petersburg.
It is the largest lake located entirely in Europe, the second largest lake in Russia after Baikal, and the 14th largest freshwater lake by area in the world. It is comparable in size to Lake Ontario. Ladoga Lacus, a methane lake on Saturn's moon Titan, is named after the lake.