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Which Countries Border Argentina?

Published:

Modified: 5 October 2026

by Cati Nelms

Which Countries Border Argentina?

Argentina borders five South American countries: Bolivia, Paraguay, Brazil, Uruguay, and Chile. It also shares maritime boundaries with the Falkland Islands and South Georgia and the South Sandwich Islands, though these are not land borders.

The longest border, with Paraguay, stretches roughly 1,880 kilometers along the Paraná River, while the border with Chile runs along the Andes mountains. To the northeast, the Iguazu Falls mark the boundary with Brazil, and the Uruguay River separates Argentina from Uruguay. Bolivia lies to the north, sharing an 832-kilometer border through the Andes.

South American Neighbors

Argentina is surrounded by five South American countries, forming its land borders in the north, west, and east. Let's explore these neighboring nations:

  1. Bolivia: To the north of Argentina lies Bolivia, sharing a border of approximately 832 kilometers. The border region is characterized by the Andes mountain range, offering breathtaking landscapes. This region is known for its cultural diversity, as well as its vibrant indigenous communities.
  2. Paraguay: Argentina shares a border of around 1,880 kilometers with Paraguay. The border region is dominated by the Parana River, offering opportunities for trade and navigation. Paraguay is renowned for its Guarani culture and rich historical heritage.
  3. Brazil: The northeastern border of Argentina stretches over 1,263 kilometers, forming a boundary with Brazil. This border region is marked by the majestic Iguazu Falls, a UNESCO World Heritage Site and a popular tourist attraction. The region is also characterized by the vibrant cultural exchange between the two countries.
  4. Uruguay: Argentina's southeastern border is formed by the Uruguay River, stretching over 579 kilometers. The border region is marked by the convergence of the two countries' cultures, with easy accessibility between the neighboring cities of Buenos Aires and Montevideo.
  5. Chile: To the west of Argentina lies Chile, with a border extending along the Andes mountains. The border region is defined by the towering Andes, offering stunning landscapes and opportunities for outdoor activities. Both countries share a history of cultural exchange and economic cooperation.

These neighboring countries have shaped Argentina's past and present, contributing to its cultural diversity, economic ties, and historical connections. The border regions offer unique opportunities for exploration, whether it's experiencing the indigenous cultures of Bolivia, discovering the natural beauty of Iguazu Falls between Argentina and Brazil, or exploring the majestic Andes mountains shared with Chile. For those planning a trip, these areas are among the top travel highlights in Argentina and offer excellent hiking and the outdoors in Argentina.

 

North American Neighbors

Although Argentina is not directly bordered by North American countries, it shares maritime boundaries with two territories in the region. These maritime borders connect Argentina with the Falkland Islands (also known as the Malvinas Islands) and South Georgia and the South Sandwich Islands.

 

Located in the South Atlantic Ocean, the Falkland Islands are approximately 480 kilometers east of Argentina's southern coast. The archipelago consists of two main islands, East Falkland and West Falkland, along with several smaller islands. The Falkland Islands are a British Overseas Territory, and their sovereignty has been a source of dispute between Argentina and the United Kingdom.

 

South Georgia and the South Sandwich Islands, located approximately 1,400 kilometers east-southeast of the Falkland Islands, are a British Overseas Territory as well. The territory consists of South Georgia Island and a chain of smaller islands known as the South Sandwich Islands. These islands are known for their diverse wildlife, including penguins, seals, and albatrosses, and they attract scientific researchers and nature enthusiasts from around the world.

 

While Argentina and these territories have a remote geographical connection, the history and sovereignty of these areas have been a matter of contention. The Falkland Islands War in 1982 between Argentina and the United Kingdom further highlighted this ongoing dispute.

 

While Argentina doesn't have direct land borders with North American countries, the maritime boundaries with the Falkland Islands and South Georgia and the South Sandwich Islands hold geopolitical significance and continue to shape the relationships and dynamics in the region.

 

Atlantic Ocean Borders

Argentina boasts a vast coastline along the Atlantic Ocean, spanning over 4,989 kilometers. This extensive coastline not only offers beaches and marine biodiversity but also forms maritime boundaries with neighboring countries.

 

To the east of Argentina is the South Atlantic Ocean, which forms maritime borders with Uruguay and Brazil. The maritime boundary with Uruguay is defined by the Uruguay River, while the boundary with Brazil is established by the imaginary line known as the "Punta del Este" line.

 

The maritime border with Uruguay is of particular significance due to the shared waters of the Río de la Plata, a large estuary formed by the confluence of the Uruguay and Paraná rivers. The Río de la Plata is an important navigational route and has a significant impact on the economies of both Argentina and Uruguay.

 

Further east, the maritime border with Brazil extends along the coastline, offering opportunities for fishing, maritime trade, and scientific research. The Brazil-Argentina border is not only an important aspect of bilateral relations but also contributes to the exploration and protection of marine resources in the region.

 

In addition to Uruguay and Brazil, the Atlantic Ocean also beckons sailors and adventurers to explore the remote South Atlantic islands that fall within Argentina's maritime jurisdiction. These include the aforementioned Falkland Islands and South Georgia and the South Sandwich Islands. While these territories have their own distinct geopolitical statuses, they hold maritime connections with Argentina through shared waters.

 

The Atlantic Ocean borders of Argentina provide a gateway to maritime trade, coastal tourism, and scientific exploration. The surrounding waters are teeming with marine life, making them a hub for fishing and conservation efforts. These borders not only impact Argentina's relationship with its neighboring countries but also play a crucial role in the country's economy and environmental management.

Pacific Ocean Borders

Argentina's western border is marked by the Andes Mountains and Chile, beyond which lies the expansive Pacific Ocean. While there are no direct land borders with countries on the Pacific coast, Argentina shares a significant boundary with Chile.

 

The boundary between Argentina and Chile follows the line of the Andes Mountains, which serves as a natural border. The rugged and towering Andes form a breathtaking backdrop, with peaks reaching heights of over 6,000 meters.

 

Although there are no direct land connections, Argentina and Chile share a unique and intertwined history. The two countries have a long-standing relationship built on cultural connections, economic cooperation, and mutual respect. The shared border along the Andes Mountains represents a vital element of this bond.

 

The boundary with Chile holds great importance for both countries, as it provides access to marine resources and opportunities for trade and exploration. The waters are rich in marine life, contributing to the fishing industries of both nations. Additionally, the boundary serves as an economic and strategic link, facilitating maritime transportation and cooperation.

 

The maritime borders of Argentina also open up opportunities for exploring the remote and exotic islands that fall within its maritime jurisdiction. These islands are known for their unique flora and fauna, and their inclusion within Argentina's maritime boundary adds to the country's natural diversity.

 

While Argentina's border with Chile may not be a traditional maritime border, it plays a significant role in shaping the relationship between the two countries. The shared access to marine resources and the geological boundaries established by the Andes Mountains foster friendship, collaboration, and opportunities for synergy in various sectors.

Summary

Argentina, located in the southern part of South America, shares borders with several countries and is bounded by the Atlantic Ocean. To the north, Argentina is bordered by Bolivia, Paraguay, and Brazil. The border with Bolivia is defined by the Andes mountain range, while the Paraguay border is marked by the Parana River. Argentina shares the world-famous Iguazu Falls with Brazil, and its southeastern border is formed by the Uruguay River, connecting it with Uruguay. To the west, Argentina shares its border with Chile, defined by the towering Andes mountains.

 

While Argentina doesn't have direct land borders with North American countries, it has maritime boundaries with the Falkland Islands and South Georgia and the South Sandwich Islands, both British Overseas Territories located in the South Atlantic Ocean.

 

The extensive coastline of Argentina along the Atlantic Ocean provides maritime borders with Uruguay and Brazil. The shared waters of the Río de la Plata estuary with Uruguay hold significant economic importance for both countries, while the maritime border with Brazil offers opportunities for trade and research.

 

This South American nation's western border is formed by Chile, with the boundary following the line of the Andes Mountains. Despite no direct land connections, Argentina and Chile have a long history of cultural exchange and cooperation, with the shared land border along the Andes serving as an economic and strategic link between the two countries.

 

In summary, Argentina is a country that is surrounded by diverse South American neighbors, shares maritime boundaries with territories in the South Atlantic, and is bordered by the Atlantic Ocean. These international boundaries shape the geopolitical dynamics, cultural exchanges, and economic ties that contribute to Argentina's unique position in the region.