This Checklist brings together for the first time the names of all 2620 described species of mites that are known to occur in Australia. It gives the correct nomenclature for each species, and places every species in the appropriate genus and family, using the latest available classification. The Checklist also provides a bibliography of information on biogeography, economic importance and, in the case of pests, biology and control. This work is a baseline from which more detailed and specific research projects will draw their fundamental data.