There are 11 National Natural Landmarks in the U.S. state of Oregon.[1]
| Name | Image | Date | Location | County | Ownership | Description | |
|---|---|---|---|---|---|---|---|
| 1971 | 45.5395°N -122.2442°W | state park | Promontory in Columbia Gorge | ||||
| 1976 | 43.372°N -121.074°W | state park | Volcanic tuff ring | ||||
| 1967 | 43.924°N -121.039°W[2] | federal | Western juniper woodland on Bureau of Land Management property. | ||||
| 1966 | 44.5558°N -119.6453°W | federal | Contains a remarkable sequence of very diverse fossils. | ||||
| 2011 | 44.5585°N -121.2771°W | federal | Native juniper savanna on an isolated plateau at the confluence of the Deschutes and Crooked Rivers. Part of Ochoco National Forest. | ||||
| 1984 | 44.9509°N -120.7989°W | private | An excellent illustration of "biscuit and scabland" topography.[3] | ||||
| 1976 | 43.6892°N -121.2549°W | federal | Atypical shield volcano in Deschutes National Forest. | ||||
| 2016 | 45.261°N -117.1788°W | federal | Contains botanically diverse montane grassland habitats and populations of endemic and rare plant species. | ||||
| 2011 | 42.5278°N -122.6838°W[4] | federal | Exceptional native bunchgrass habitat. Located on Bureau of Land Management land.[5] [6] | ||||
| 1987 | 44.364°N -123.23°W | federal | A bottomland interior valley grassland floodplain. Part of William L. Finley National Wildlife Refuge. | ||||
| 2013 | 45.54°N -117.09°W | private | Largest contiguous remaining tract of bunchgrass prairie in the nation. |