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There are 11 National Natural Landmarks in Idaho.
| Name | Image | Date | Location | County | Ownership | Description |
|---|---|---|---|---|---|---|
| Big Southern Butte |  |
1976 | Atomic City43.401389°N 113.023889°W | Butte | federal (Bureau of Land Management) | A 2,500 ft Rhyolitic dome that rises over the Eastern Snake River Plain. It illustrates the scope and dimensions of Quaternary volcanism in the western United States. |
| Big Springs |  |
1980 | Island Park44.500278°N 111.255278°W | Fremont | federal (Caribou-Targhee National Forest) | The only first-magnitude spring in the country that issues forth from rhyolitic lava flows. |
| Cassia Silent City of Rocks |  |
1974 | Malta42.076026°N 113.701676°W | Cassia | federal (City of Rocks National Reserve) | Monolithic landforms created by exfoliation processes on exposed massive granite plutons. |
| Crater Rings |  |
1980 | Mountain Home43.1907°N 115.8597°W | Elmore | federal (Morley Nelson Snake River Birds of Prey National Conservation Area) | Two adjacent and symmetrical pit craters that are among the few examples of this type of crater in the continental United States. |
| Great Rift of Idaho |  |
1968 | Craters of the Moon National Monument and Preserve43.46167°N 113.56278°W | Blaine, Minidoka, Power | federal (Craters of the Moon National Monument and Preserve) | A tensional fracture in the Earth's crust. |
| Hagerman Fauna Sites |  |
1975 | Hagerman Fossil Beds National Monument42.7906°N 114.9448°W | Twin Falls | federal (Hagerman Fossil Beds National Monument) | Contains the world's richest deposits of Upper Pliocene age terrestrial fossils. |
| Hell's Half Acre Lava Field |  |
1976 | Blackfoot43.5°N 112.45°W | Bingham, Bonneville | federal (Bureau of Land Management) | Fully exposed pahoehoe lava flow. |
| Hobo Cedar Grove Botanical Area |  |
1980 | Shoshone47.0911°N 116.127°W | Shoshone | federal (St. Joe National Forest) | An outstanding example of pristine western red cedar forest. |
| Menan Buttes |  |
1980 | Menan43.6°N 111.5°W | Jefferson, Madison | federal (Bureau of Land Management) | Contains outstanding examples of glass tuff cones, which are found in only a few places in the world. |
| Niagara Springs |  |
1980 | Hagerman42.85778°N 114.87639°W | Gooding | private | Least developed of the large springs discharging into the Snake River from the Snake River plain aquifer system. |
| Sheep Rock |  |
1976 | Council45.191651°N 116.67132°W | Adams | federal (Payette National Forest) | Horizontally layered lavas that represent successive flows on the Columbia River Basalt Plateau. |
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