Lake Saint John may refer to:
- Lake St. John (electoral district), a federal electoral district in Quebec, Canada
- Lake St. John (Louisiana), an oxbow lake in Louisiana near Ferriday and Lake Bruin
- Lake Saint John (South Dakota), a lake in Hamlin County, South Dakota
- Lac Saint-Jean, a large, shallow lake in Quebec, Canada
Lake St. John Cottage - Saint John (Louisiana) - United States - Lake St. John Cottage hotel city: Saint John (Louisiana) - Country: United States Address: 6015 Highway 568; zip code: LA 71334 Lake St. John Cottage offers ...