Lake Iroquois can refer to:
- Lake Iroquois (South Dakota)
- Lake Iroquois (Vermont) in Vermont in the United States
- Lake Iroquois, Illinois in Iroquois County in Illinois in the United States
- Glacial Lake Iroquois, a prehistoric lake in the bed of present-day Lake Ontario in North America.
This disambiguation page lists articles about distinct geographical locations with the same name.
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