Bull Lake is a lake in geographic Varley Township in Algoma District, Ontario, Canada.

The primary inflows are unnamed creeks from Bridge Lake and West Twin Lake, and the primary outflow is Bull Creek, which flows into the Little White River, a tributary of the Mississagi River.

Bull Lake is about 31 kilometres (19 mi) north north east of the community of Iron Bridge.

A second Bull Lake in Algoma District, Bull Lake (Boon Township), lies 73 kilometres (45 mi) east southeast.

This Northern Ontario geographical article is a stub.