Seymour Lake or Seymour Lake may refer to:
Lakes In Canada: In Ontario Seymour Lake (Algoma District) Seymour Lake in Northumberland County at Seymour Lake in Thunder Bay District at In British Columbia Seymour Lake (Seymour River), north of Vancouver
In the United States: Lake Seymour (Minnesota) Seymour Lake (Vermont)
In Australia: In New South Wales Seymour Lake in Holgate