An account is given of the cirolanid fauna of Australia. The total number of species recorded is 102, of which 51 are new. Two new species not yet recorded from Australian coastal waters are also included. Full descriptions of all genera are given, and detailed descriptions and figures are given for all species not previously recorded from Australia or in need of redescription. The following genera and species are recorded from Australian waters: Anopsilana (2 species), Bathynomus (3 species), Cartetolana (1 species), Orolana (30 species), Eurydice (8 species), Eurylana (1 species), Excirolana (1 species), Hansenolana (1 species), Metacirolana (7 species), Natatolana (31 species), Neocirolana (5 species), Orphelana (1 species), Pseudolana (7 species), and three new genera—Booralana (2 species), Dolicholana (1 species) and Limicolana (1 species). Keys to the Australian genera and species are provided. Discussion on characters of taxonomic utility is given. Annotated lists for all non-Australian genera and species are provided, and brief notes on the natural history of the family are provided.