Third Lake (Nova Scotia) could refer to one of many lakes:
Annapolis County Third Lake located at
Cape Breton Regional Municipality Third Lake located at
Digby County
Third Lake located at Third Lake located at
Guysborough County
Third Lake located at Third Lake located at Third Lake located at Third Lake located at
Halifax Regional Municipality
Third Lake located at Third Lake located at Third Lake located at Third Lake located at Third Lake located at
Richmond County
Third Lake located at
Shelburne County
Third Lake located at
Victoria County
Third Lake O'Law located at
Yarmouth County
Third Lake located at
References Geographical Names Board of Canada
Nova Scotia Placenames