Diamond Lake is the name of at least nine different lakes in Ontario, Canada:
Diamond Lake, Kenora District Diamond Lake, Cochrane District Diamond Lake, Algoma District Diamond Lake, Sudbury District Diamond Lake, Hastings County Diamond Lake, Nipissing District/Sudbury District Diamond Lake, Timiskaming District Diamond Lake, Renfrew County Diamond Lake, Parry Sound District
See also List of lakes in Ontario
References