Lake Nosbonsing is a lake in the municipalities of Bonfield, Chisholm, and East Ferris in Nipissing District in Northeastern Ontario, Canada. It is near the City of North Bay, is the source of the Kaibuskong River, and is in the Saint Lawrence River drainage basin. ()
Length: 6.84 miWidth: 3.11 miElevation: 807 ft a.s.l.Coordinates: 46°12'26"N, 79°12'47"W