Atlin Lake

Atlin Lake
A portion of Atlin Lake (on the right half of the image) during the winter, as seen from space. The lake seen on the left half of the image is Tagish Lake
Location	Atlin District, northwestern British Columbia
Coordinates	59°30′N 133°45′W / 59.500°N 133.750°W / 59.500; -133.750Coordinates: 59°30′N 133°45′W / 59.500°N 133.750°W / 59.500; -133.750
Primary inflows	O Donnel River, Pike River, Llewellyn Glacier
Primary outflows	Atlin River
Basin countries	Canada
Surface area	791 km2 (305 sq mi)
Surface elevation	2,192 ft (668 m)
Settlements	Atlin

Atlin Lake is a lake in northwestern British Columbia and is that province's largest natural lake, covering 300 sq mi (780 km²). The northern tip of the lake is in Yukon, as is Little Atlin Lake. However, most of the lake lies within the Atlin District of British Columbia. Atlin Lake is considered the source of the Yukon River although it is drained via the short Atlin River into Tagish Lake.

The name comes from Áa Tlein (in Canadian spelling  Tłèn), the Tlingit name meaning simply "big lake".

The community of Atlin, British Columbia, is located on the eastern shore of the lake. The southern part of the lake is in the Atlin Provincial Park and Recreation Area.