Coastal South American Countries: Pacific & Atlantic Shorelines

All 12 sovereign South American nations except two are coastal. Here's the breakdown by ocean:

Pacific Coast (5 countries)

• Colombia – 1,760 km; major ports: Buenaventura, Tumaco
• Ecuador – 2,237 km (incl. Galápagos); ports: Guayaquil, Esmeraldas
• Peru – 2,414 km; ports: Callao, Matarani, Salaverry
• Chile – 6,435 km (longest); ports: Valparaíso, San Antonio, San Vicente
• Panama* – Often grouped with Central America, but geographically South American on the isthmus; Pacific coast 1,700 km

Atlantic/Caribbean Coast (7 countries)

• Colombia – 1,600 km Caribbean; ports: Cartagena, Barranquilla, Santa Marta
• Venezuela – 2,800 km Caribbean; ports: La Guaira, Puerto Cabello, Maracaibo
• Guyana – 459 km Atlantic; port: Georgetown
• Suriname – 386 km Atlantic; port: Paramaribo
• French Guiana (France) – 378 km Atlantic; port: Dégrad-des-Cannes
• Brazil – 7,491 km Atlantic (longest); ports: Santos, Rio, Paranaguá, Suape
• Uruguay – 660 km Atlantic/Río de la Plata; port: Montevideo
• Argentina – 4,989 km Atlantic; ports: Buenos Aires, Bahía Blanca, Ushuaia

Landlocked Nations (2)

• Bolivia – Lost Pacific coast to Chile (War of the Pacific, 1879–84); maintains naval force on Lake Titicaca; seeks sovereign access.
• Paraguay – Riverine access via Paraguay/Paraná rivers to Atlantic (port of Nueva Palmira, Uruguay).

Notes

• Colombia is the only South American country with both Pacific and Atlantic coastlines.
• Ecuador, Peru, Chile, Colombia, Panama = Pacific Alliance (trade bloc).
• Brazil, Argentina, Uruguay, Paraguay = Mercosur (Atlantic-focused).