Sungai St. Lawrence adalah Sungai internasional besar di tengah-tengah garis lintang Amerika Utara yang menghubungkan Danau-Danau Besar (Great Lakes) ke Samudra Atlantik Utara. Sungai ini mengalir ke arah timur laut dari Danau Ontario ke Teluk St. Lawrence, melintasi provinsi Ontario dan Quebec di Kanada dan negara bagian New York di Amerika Serikat. Sebuah bagian Sungai ini menciptakan perbatasan Amerika Serikat dengan Kanada.

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Regional Geography of the St. Lawrence River Information about Juniper Island (Ontario) St. Lawrence Parks Commission (Ontario) Great Lakes St. Lawrence Seaway System Safe Passage: Aids to Navigation on the St. Lawrence – Historical essay, illustrated with drawings and photographs Annotated Bibliography on St. Lawrence County and Northern New York region. International St. Lawrence River Board of Control Diarsipkan 23 July 2013 di Wayback Machine. Saint Lawrence River from The Canadian Encyclopedia Diarsipkan 21 September 2017 di Wayback Machine. St. Lawrence River Cam Watch the Jacques Cousteau documentary, St. Lawrence: Stairway to the Sea The Steamboats Sir James Kemp and Lord Dalhousie on the River St. Lawrence, Upper Canada in 1833 by D.J. Kennedy, Historical Society of Pennsylvania Diarsipkan 22 December 2016 di Wayback Machine.