As of July 2016, the International Union for Conservation of Nature (IUCN) lists 4069 least concern arthropod species. 43% of all evaluated arthropod species are listed as least concern.
The IUCN also lists 27 arthropod subspecies as least concern.

No subpopulations of arthropods have been evaluated by the IUCN.

This is a complete list of least concern arthropod species and subspecies as evaluated by the IUCN.

There are 21 arachnid species assessed as least concern.

Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 1193 malacostracan species and 15 malacostracan subspecies assessed as least concern.

There are 1191 decapod species and 15 decapod subspecies assessed as least concern.

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There are 2843 insect species and 12 insect subspecies assessed as least concern.

There are 184 species and six subspecies in the order Orthoptera assessed as least concern.

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There are 106 species in the order Hymenoptera assessed as least concern.

Lepidoptera comprises moths and butterflies. There are 420 species and one subspecies in the order Lepidoptera assessed as least concern.

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There are 423 beetle species assessed as least concern.

Odonata includes dragonflies and damselflies. There are 1690 species and five subspecies in the order Odonata assessed as least concern.

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