From List of National Natural Landmarks, these are the National Natural Landmarks in the U.S. state of Oregon.[1]
{{clear}}{{Oregon NNLs map}} | Name | Image | Date | Location | County | Ownership | Description | | 1 | Crown Point | 1971 | 45.5395|-122.24422|type:landmark_region:US-OR|name=Crown Point}} | Multnomah | state park | Promontory in Columbia Gorge |
| 2 | Fort Rock State Monument | 1976 | 43.372|-121.074|type:landmark_region:US-OR|name=Fort Rock}} | Lake | state park | Volcanic tuff ring |
| 3 | Horse Ridge Natural Area | 1967 | 43.924|-121.039|type:landmark_region:US-OR|name=Horse Ridge}}[2] | Deschutes | federal | Western juniper woodland on Bureau of Land Management property.[2] |
| 4 | John Day Fossil Beds | 1966 | 44.555833|-119.645278|type:landmark_region:US-OR|name=John Day Fossil Beds}} | Grant | federal | Contains a remarkable sequence of very diverse fossils. |
| 5 | The Island | 2011 | 44.558489|-121.277143|region:US-OR|name=The Island}} | 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 | 44.950889|-120.7988834|region:US-OR|name=Lawrence Memorial Grassland Preserve}} | Oregon | private | An excellent illustration of "biscuit and scabland" topography.[3] |
| 7 | Newberry Crater | 1976 | 43.689194|-121.254889|type:mountain_region:US-OR|name=Newberry Volcano}} | Deschutes | federal | Atypical shield volcano in Deschutes National Forest. |
| 8 | Mount Howard-East Peak | 2016 | 45.260987|-117.178778|type:mountain_region:US-OR|name=Mount Howard-East Peak}} | Wallowa | federal | Contains botanically diverse montane grassland habitats and populations of endemic and rare plant species. |
| 9 | Round Top Butte | 2011 | 42.5277551|-122.68381|type:mountain_region:US-OR|name=Newberry Volcano}}[4] | Jackson | federal | Exceptional native bunchgrass habitat. Located on Bureau of Land Management land. [5] [6] |
| 10 | Willamette Floodplain | 1987 | 44.364|-123.23|type:river_region:US-OR|name=Willamette Floodplain}} | Benton, Lane, Linn, Marion, Polk | federal | A bottomland interior valley grassland floodplain. Part of William L. Finley National Wildlife Refuge. |
| 11 | Zumwalt Prairie | 2013 | 45.54|-117.09|region:US-OR|name=Zumwalt Prairie}} | Wallowa | private | Largest contiguous remaining tract of bunchgrass prairie in the nation. |
1. ^{{cite news|last1=Hale|first1=Jamie|title=Oregon Travel News: Oregon's 11 National Natural Landmarks|url=http://www.oregonlive.com/travel/index.ssf/2016/08/oregons_11_national_natural_la.html|accessdate=2017-08-10|work=The Oregonian|publisher=Oregonlive / The Oregonian|date=August 10, 2016|ref=oregonianlist}}
2. ^1 {{cite gnis|id=1155841|name=Horse Ridge Natural Area|accessdate=2009-04-05}}
3. ^{{cite web|title=Lawrence Memorial Grassland Preserve|url=https://www.conservationgateway.org/ConservationByGeography/NorthAmerica/UnitedStates/oregon/deserts/cbg/Pages/Lawrence-Memorial-Grasslands.aspx|website=Conservation Gateway|publisher=The Nature Conservancy|accessdate=2017-08-10}}
4. ^{{cite web|title=Round Top Butte RNA|url=http://www.fsl.orst.edu/rna/sites/Round_Top_Butte_BLM.html|website=Pacific Northwest Interagency Natural Areas Network|publisher=Oregon State University, Forestry Sciences Laboratory|accessdate=2017-08-31}}
5. ^https://www.fs.fed.us/pnw/pubs/pnw_gtr895.pdf
6. ^http://inr.oregonstate.edu/sites/inr.oregonstate.edu/files/2015_or_natural_areas_plan.pdf
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