Rat Root River

{{Use American English|date=February 2025}}

{{Infobox river

|name = Rat Root River

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|source1_location = Minnesota

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|subdivision_type1 = Country

|subdivision_name1 = United States

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The Rat Root River is a river of Minnesota.{{GNIS|662260}} It flows into the Rainy River.

Rat Root River was named for roots eaten by muskrats.{{cite book|author=Warren Upham|title=Minnesota Geographic Names: Their Origin and Historic Significance|url=https://archive.org/details/minnesotageogra00uphagoog|year=1920|publisher=Minnesota Historical Society|page=[https://archive.org/details/minnesotageogra00uphagoog/page/n304 285]}}