The St. Croix River is any of several rivers in North America:
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St. Croix River (Maine–New Brunswick)
The St. Croix River (french: Fleuve Sainte-Croix; Malecite-Passamaquoddy language, Maliseet-Passamaquoddy: ''Skutik'') is a river in northeastern North America, in length,U.S. Geological Survey. National Hydrography Dataset high-resolution flow ...
that forms part of the international boundary between Maine and New Brunswick
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St. Croix River (Wisconsin–Minnesota) that forms part of the border between Wisconsin and Minnesota
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St. Croix River (Nova Scotia), a tidal river in Hants County, Nova Scotia
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