Cabo Polonio is a caserío (hamlet) located in the eastern coast of Uruguay in the Rocha Department.
Cabo Polonio has no roads leading to it and is located about 7 km from the main highway. It is accessible by walking through the dunes or by 4x4 vehicles. The region has no electricity or running water for the few hundred houses of this town, and wind power and a few generators are used to power some of the posadas and grocery store. There is a lighthouse that gets power from the national grid. Residents obtain water from nearby water wells or collecting rain water.