Harbor is an unincorporated community in Curry County, Oregon, United States. It is located across the Chetco River from the city of Brookings. For statistical purposes, the United States Census Bureau has defined Harbor as a census-designated place (CDP). The census definition of the area may not precisely correspond to local understanding of the area with the same name. The population of the CDP was 2,622 at the 2000 census.
The original name of the post office in the area was "Chetco", after the Chetco River. It was established in 1863 and moved several times until it closed in 1910. Meanwhile, a new post office named Harbor was established at mouth of the Chetco River in 1894. The name of the office may have come from the Chetco Harbor Land and Townsite Company.
According to the United States Census Bureau, the CDP has a total area of 2.3 square miles (6.0 km²), of which, 1.9 square miles (4.8 km²) of it is land and 0.4 square miles (1.1 km²) of it (19.05%) is water.