Long Lake can refer to a number of places, both real and imaginary. ironically, many, if not most, of these places are not lakes, but are towns:

Cities, towns, places

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Canada

Long Lake and its French language equivalent, "Lac Long", is the most commonly used name for a geographical feature in Canada. There are 203 Long Lakes and 164 occurrences of Lac Long. ^* These include:

• Long Lake, Thunder Bay District, Ontario (town)
• Long Lake, Frontenac County, Ontario (town)
• Long Lake (electoral district)
• Long Lake Provincial Park
• Long Lake (Ontario) (lake)

United States

• Long Lake, Illinois (census-designated place)
• Long Lake (Maine) (lake)
• Long Lake, Minnesota (city)
• Long Lake, New York (town)
• Long Lake, South Dakota (town)
• Long Lake, Florence County, Wisconsin (town)
• Long Lake, Washburn County, Wisconsin (town)
• Long Lake Camp, a summer camp in New York
• Long Lake Township, Michigan
• Long Lake Township, Crow Wing County, Minnesota
• Long Lake Township, Watonwan County, Minnesota

Lakes

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• Long Lake, a lake in Blue Earth County, Minnesota
• Long Lake, a lake in Carver County, Minnesota
• Long Lake, a lake in Carson Township of Cottonwood County, Minnesota
• Long Lake, a lake in Rose Hill Township of Cottonwood County, Minnesota
• Long Lake, a lake in Lyon County, Minnesota
• Long Lake, a lake in Redwood County, Minnesota
• Long Lake, a lake in Watonwan County, Minnesota
• Long Lake, a lake in Hubbard County, Minnesota

Fictional places

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• Long Lake (Middle-earth) is a lake south of the Lonely Mountain in J. R. R. Tolkien's fictional world of Middle-earth.