Nebria crassicornis is a species of ground beetle from Nebriinae subfamily that can be found in such US states as Montana and Washington, where it is found in mid- to upland or even mountainous areas, in the vicinity of water.
Adults are nocturnal and carnivorous.A Treatise on the Western Hemisphere Caraboidea (Coleoptera)
Subspecies Nebria crassicornis crassicornis (British Columbia, Washington) - thick-horned gazelle beetle Nebria crassicornis intermedia Van Dyke, 1949 (Alberta, British Columbia, Idaho, Montana, Oregon, Utah, Washington, Wyoming) - intermediate gazelle beetle
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