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.