Canada–United States border

E131553

international border land border political boundary

The Canada–United States border is the world’s longest international land boundary, separating Canada and the United States across diverse terrains from the Atlantic to the Pacific and Arctic Oceans.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (43)

Label	Occurrences
Canada–United States border canonical	307
United States–Canada border	57
U.S.–Canada border	34
United States border	20
Canadian border	14
Canada–United States	3
Canada–United States border crossings	3
Alaska–Canada border	2
Canada–United States land border crossings	2
Canadian–American border	2
U.S.-Canada border	2
U.S.–Canada border at Sault Ste. Marie	2
49th Parallel	1
British Columbia–Washington border	1
Canada–United States border at Blaine	1
Canada–United States border at Calais, Maine	1
Canada–United States border at International Falls, Minnesota	1
Canada–United States border at Peace Arch	1
Canada–United States border near Lancaster, Minnesota	1
Canada–United States border region on Lake Erie	1
Canada–United States hydrological boundary	1
Canada–United States international boundary	1
Canada–United States international boundary line	1
Canada–United States land border	1
Canada–United States land border crossings network	1
Canada–United States land border in the Pacific Northwest	1
Canadian border at the International Peace Garden	1
International Boundary between Canada and the United States	1
Minnesota–Canada border	1
U.S. border	1
U.S.-Canada border west of Lake of the Woods	1
U.S.–Canada border formation	1
U.S.–Canada border in Clinton County	1
U.S.–Canada land and water border	1
U.S.–Canada land border	1
U.S.–Canadian border	1
US–Canada border	1
United States–Canada border (St. Lawrence River area)	1
United States–Canada border (marine)	1
United States–Canada border area	1
United States–Canada international boundary	1
United States–Canada international boundary line	1
United States–Canada land boundary	1

How this entity was disambiguated

This entity first appeared as the object of triple T1148420 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Canada–United States border
Context triple: [Windsor International Airport, locatedNear, Canada–United States border]

A. Canada–United States border region
The Canada–United States border region is the extensive transboundary area where the two countries meet, encompassing shared ecosystems, waterways, and communities that require coordinated environmental and policy management.
B. U.S.–Mexico border
The U.S.–Mexico border is the international boundary separating the United States and Mexico, stretching from the Pacific Ocean to the Gulf of Mexico and serving as a major focal point for migration, trade, and security issues.
C. Van Buren–Saint-Léonard Border Crossing
The Van Buren–Saint-Léonard Border Crossing is an international crossing over the Saint John River connecting Van Buren, Maine, in the United States with Saint-Léonard, New Brunswick, in Canada.
D. Quebec–Newfoundland and Labrador border
The Quebec–Newfoundland and Labrador border is the interprovincial boundary in eastern Canada separating Quebec from the mainland portion of Newfoundland and Labrador across the Labrador Peninsula.
E. Madawaska–Edmundston Border Crossing
The Madawaska–Edmundston Border Crossing is an international crossing over the Saint John River connecting Madawaska, Maine, in the United States with Edmundston, New Brunswick, in Canada.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Canada–United States border
Target entity description: The Canada–United States border is the world’s longest international land boundary, separating Canada and the United States across diverse terrains from the Atlantic to the Pacific and Arctic Oceans.

A. Canada–United States border region
The Canada–United States border region is the extensive transboundary area where the two countries meet, encompassing shared ecosystems, waterways, and communities that require coordinated environmental and policy management.
B. U.S.–Mexico border
The U.S.–Mexico border is the international boundary separating the United States and Mexico, stretching from the Pacific Ocean to the Gulf of Mexico and serving as a major focal point for migration, trade, and security issues.
C. Van Buren–Saint-Léonard Border Crossing
The Van Buren–Saint-Léonard Border Crossing is an international crossing over the Saint John River connecting Van Buren, Maine, in the United States with Saint-Léonard, New Brunswick, in Canada.
D. Quebec–Newfoundland and Labrador border
The Quebec–Newfoundland and Labrador border is the interprovincial boundary in eastern Canada separating Quebec from the mainland portion of Newfoundland and Labrador across the Labrador Peninsula.
E. Madawaska–Edmundston Border Crossing
The Madawaska–Edmundston Border Crossing is an international crossing over the Saint John River connecting Madawaska, Maine, in the United States with Edmundston, New Brunswick, in Canada.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	international border ⓘ land border ⓘ political boundary ⓘ
country1	Canada ⓘ
country2	United States ⓘ linked to: United States of America
demarcatedBy	boundary markers ⓘ survey monuments ⓘ
establishedBy	various historical treaties ⓘ
extendsFrom	Atlantic Ocean ⓘ
extendsTo	Arctic Ocean ⓘ Pacific Ocean ⓘ
governedBy	Canada–United States treaties ⓘ linked to: Boundary Waters Treaty of 1909
hasApproximateLength	5525 miles ⓘ 8891 km ⓘ
hasBorderCrossings	bridge crossings ⓘ ferry crossings ⓘ land ports of entry ⓘ rail crossings ⓘ
hasDisputedSections	some maritime areas ⓘ
hasNotableFeature	49th parallel north section ⓘ Great Lakes section ⓘ linked to: Great Lakes region St. Lawrence River section ⓘ linked to: Saint Lawrence River
historicalTreaty	Jay Treaty ⓘ Oregon Treaty ⓘ linked to: Oregon Treaty of 1846 Treaty of 1818 ⓘ linked to: Convention of 1818 Treaty of Paris 1783 ⓘ linked to: Treaty of Paris (1783) Webster–Ashburton Treaty ⓘ
includesMaritimeBoundary	yes ⓘ
includesSection	Alaska–Canada border ⓘ linked to: Canada–United States border border between contiguous United States and Canada ⓘ
isDemilitarized	largely ⓘ
isHeavilyTrafficked	true ⓘ
isLongestInternationalLandBoundary	true ⓘ
monitoredBy	Canada Border Services Agency ⓘ U.S. Customs and Border Protection ⓘ
overseenBy	International Boundary Commission ⓘ
partlyDefinedByParallel	49th parallel north ⓘ
passesThrough	forests ⓘ lakes ⓘ mountain ranges ⓘ prairies ⓘ rivers ⓘ rural areas ⓘ urban areas ⓘ
separates	Canada ⓘ United States ⓘ linked to: United States of America
usedFor	tourism ⓘ trade ⓘ transportation ⓘ

How these facts were elicited

Referenced by (479)

Full triples — surface form annotated when it differs from this entity's canonical label.

Windsor International Airport → locatedNear → Canada–United States border ⓘ

International Joint Commission → appliesToJurisdiction → Canada–United States border ⓘ

Boundary Waters Treaty of 1909 → appliesTo → United States–Canada border ⓘ