South American Countries Bordering the Atlantic Ocean: Eight Nations

Eight South American sovereign states have Atlantic coastlines:

1. Argentina — 4,989 km (Patagonia to Río de la Plata).
2. Brazil — 7,491 km (longest on continent; Amazon mouth to Rio Grande do Sul).
3. Uruguay — 660 km (Río de la Plata estuary, Atlantic coast).
4. Guyana — 459 km (Essequibo, Demerara, Berbice deltas).
5. Suriname — 386 km (muddy coast, mangroves).
6. French Guiana (France) — 378 km (Kourou spaceport, pristine mangroves).
7. Venezuela — 2,800 km (including Gulf of Paria, Orinoco Delta).
8. Colombia — 1,760 km (Caribbean coast — Caribbean is part of Atlantic).

Notes

• Chile, Peru, Ecuador, Bolivia, Paraguay are Pacific or landlocked.
• Colombia's Caribbean coast is Atlantic (Caribbean Sea = Atlantic marginal sea).
• Venezuela's Gulf of Venezuela & Paria connect to Caribbean/Atlantic.
• Brazil's coast dominates — 50% of South America's Atlantic shoreline.

Economic Significance

• Ports: Santos (Brazil), Buenos Aires, Montevideo, Cartagena, La Guaira.
• Offshore oil: Brazil (pre-salt), Guyana (Stabroek), Suriname.
• Fisheries: Patagonian shelf, Brazil Current, Orinoco Delta.
• Trade: Europe, Africa, North America routes.

These eight nations share the Atlantic's resources, risks, and connectivity.