Knappa is an unincorporated community and census-designated place[2] located on the south bank of the Columbia River in Clatsop County, Oregon, United States, approximately 12 miles (19 km) directly east of Astoria.

Knappa faces the Columbia River, where several islands comprise the Lewis and Clark National Wildlife Refuge.

[4] The community is named after Aaron Knapp Jr., an early settler.

[5] Logging and fishing are the primary economic activities in Knappa.

This Clatsop County, Oregon state location article is a stub.