McKenzie Lake () is a lake in geographic Unwin Township in the Unorganized North Part of Sudbury District in northeastern Ontario, Canada. It is part of the Great Lakes Basin, and is just from the border with the southwest corner of geographic Dufferin Township in Timiskaming District.
The lake has one unnamed inflow at the southwest. The primary outflow is an unnamed creek at the north which flows via Demott Creek, Silvester Creek, the Wanapitei River and the French River to Lake Huron.
See also List of lakes in Ontario
References