Naselle is a census-designated place (CDP) in Pacific County, Washington, United States located about 23 miles (37 km) from the mouth of the Columbia River.

The valley's Naselle River flows west into nearby Willapa Bay and then into the Pacific Ocean.

The name comes from the Nisal Indians, a Chinookan tribe formerly residing on the river.

Settled primarily by Finnish[4] and Scandinavian immigrants, the community has maintained this cultural heritage despite a declining percentage of traditional family names.

Jennifer L. Holm's Newbery Honor-winning novel Our Only May Amelia is set in pioneer Naselle, then spelled "Nasel", and is based on Holm family documents of life as a Finnish-American frontier family.