List of National Natural Landmarks in Oregon
From List of National Natural Landmarks, these are the National Natural Landmarks in the U.S. state of Oregon.
| Name | Image | Date | Location | County | Ownership | Description | |
| 1 | Crown Point | 1971 | Multnomah | state park | Promontory in Columbia Gorge | ||
| 2 | Fort Rock State Monument | 1976 | Lake | state park | Volcanic tuff ring | ||
| 3 | Horse Ridge Natural Area | 1967 | Deschutes | federal | Western juniper woodland on Bureau of Land Management property. | ||
| 4 | John Day Fossil Beds | 1966 | Grant | federal | Contains a remarkable sequence of very diverse fossils. | ||
| 5 | The Island | 2011 | Jefferson | federal | Native juniper savanna on an isolated plateau at the confluence of the Deschutes and Crooked Rivers. Part of Ochoco National Forest. | ||
| 6 | Lawrence Memorial Grassland Preserve | 1984 | Oregon | private | An excellent illustration of "biscuit and scabland" topography. | ||
| 7 | Newberry Crater | 1976 | Deschutes | federal | Atypical shield volcano in Deschutes National Forest. | ||
| 8 | Mount Howard-East Peak | 2016 | Wallowa | federal | Contains botanically diverse montane grassland habitats and populations of endemic and rare plant species. | ||
| 9 | Round Top Butte | 2011 | Jackson | federal | Exceptional native bunchgrass habitat. Located on Bureau of Land Management land. | ||
| 10 | Willamette Floodplain | 1987 | Benton, Lane, Linn, Marion, Polk | federal | A bottomland interior valley grassland floodplain. Part of William L. Finley National Wildlife Refuge. | ||
| 11 | Zumwalt Prairie | 2013 | Wallowa | private | Largest contiguous remaining tract of bunchgrass prairie in the nation. |