| Acaridae Latreille, 1802 | Vorratsmilben | 157 | Arten | Taxom |
| Acaronychidae Grandjean, 1932 | | 13 | Arten | Taxom |
| Acarophenacidae Cross, 1965 | | 2 | Arten | Taxom |
| Acherontacaridae Cook, 1967 | | 5 | Arten | Taxom |
| Achipteriidae Thor, 1929 | | 74 | Arten | Taxom |
| Adamystidae Cunliffe, 1957 | | 12 | Arten | Taxom |
| Adelphacaridae Grandjean, 1954 | | 3 | Arten | Taxom |
| Aeroglyphidae Zakhvatkin, 1941 | | 3 | Arten | Taxom |
| Aleurodamaeidae Paschoal & J..., 1985 | | 3 | Arten | Taxom |
| Algophagidae Fain, 1974 | | 7 | Arten | Taxom |
| Alicorhagiidae Grandjean, 1939 | | 6 | Arten | Taxom |
| Alloptidae Gaud, 1957 | | 4 | Arten | Taxom |
| Allothyridae Van der Hammen, 1972 | | 1 | Art | Taxom |
| Alycidae Canestrini &..., 1877 | | 20 | Arten | Taxom |
| Amblyommidae Banks, 1907 | | 191 | Arten | Taxom |
| Ameridae Grandjean, 1965 | | 14 | Arten | Taxom |
| Amerobelbidae Grandjean, 1954 | | 9 | Arten | Taxom |
| Ameronothridae Willmann, 1931 | | 12 | Arten | Taxom |
| Ameroseiidae Evans, 1961 | | 92 | Arten | Taxom |
| Ametroproctidae Subías, 2004 | | 4 | Arten | Taxom |
| Analgidae Trouessart &..., 1884 | | 17 | Arten | Taxom |
| Anderemaeidae Balogh, 1972 | | 6 | Arten | Taxom |
| Anisitsiellidae Koenike, 1910 | | 36 | Arten | Taxom |
| Anystidae Oudemans, 1936 | | 53 | Arten | Taxom |
| Apheviderulicidae Gerecke, Smi..., 1999 | | 1 | Art | Taxom |
| Arborichthoniidae J. & P. Balogh, 1992 | | 2 | Arten | Taxom |
| Arceremaeidae Balogh, 1972 | | 4 | Arten | Taxom |
| Argasidae C. L. Koch, 1844 | Lederzecken | 67 | Arten | Taxom |
| Aribatidae Aoki, Takak..., 1994 | | 1 | Art | Taxom |
| Arrenuridae Thor, 1900 | | 145 | Arten | Taxom |
| Ascidae Oudemans, 1905 | | 220 | Arten | Taxom |
| Astegistidae Balogh, 1961 | | 38 | Arten | Taxom |
| Athienemanniidae Viets, 1922 | | 8 | Arten | Taxom |
| Atopochthoniidae Grandjean, 1949 | | 5 | Arten | Taxom |
| Atopomelidae Fain, 1972 | | 39 | Arten | Taxom |
| Aturidae Thor, 1900 | | 167 | Arten | Taxom |
| Autognetidae Grandjean, 1960 | | 27 | Arten | Taxom |
| Avenzoariidae Oudemans, 1905 | | 15 | Arten | Taxom |
| Barbutiidae Robaux, 1975 | | 5 | Arten | Taxom |
| Basilobelbidae Balogh, 1961 | | 15 | Arten | Taxom |
| Bdellidae Dugès, 1834 | Schnabelmilben | 47 | Arten | Taxom |
| Belbidae (Willmann, 1931) | | 2 | Arten | Taxom |
| Belboidae | | 1 | Art | Taxom |
| Blattisociidae (Garman, 1948) | | 203 | Arten | Taxom |
| Brachychthoniidae Thor, 1934 | | 113 | Arten | Taxom |
| Caeculidae Berlese, 1883 | | 35 | Arten | Taxom |
| Caleremaeidae Grandjean, 1965 | | 9 | Arten | Taxom |
| Caligonellidae Grandjean, 1944 | | 58 | Arten | Taxom |
| Caloppiidae (Balogh, 1960) | | 24 | Arten | Taxom |
| Calyptostomatidae Oudemans, 1923 | | 11 | Arten | Taxom |
| Camerobiidae Southcott, 1957 | | 103 | Arten | Taxom |
| Camisiidae Oudemans, 1900 | | 10 | Arten | Taxom |
| Canestriniidae Berlese, 1884 | | 154 | Arten | Taxom |
| Caraboacaridae Mahunka, 1970 | | 1 | Art | Taxom |
| Carabodidae Koch, 1837 | | 195 | Arten | Taxom |
| Carbolohmanniidae | | 1 | Art | Taxom |
| Carpoglyphidae Oudemans, 1923 | | 8 | Arten | Taxom |
| Celaenopsidae Berlese, 1892 | | 5 | Arten | Taxom |
| Cepheidae (Berlese, 1896) | | 4 | Arten | Taxom |
| Cepheusidae Berlese, 1896 | | 56 | Arten | Taxom |
| Ceratokalummidae Balogh, 1970 | | 3 | Arten | Taxom |
| Ceratoppiidae (Kunst, 1971) | | 37 | Arten | Taxom |
| Ceratozetidae Jacot, 1925 | | 232 | Arten | Taxom |
| Chaetodactylidae Zakhvatkin, 1941 | | 35 | Arten | Taxom |
| Chamobatidae Thor, 1937 | | 38 | Arten | Taxom |
| Chappuisididae Motas & Tana..., 1946 | | 8 | Arten | Taxom |
| Chapuisididae | | 1 | Art | Taxom |
| Cheylabididae Gaud, 1983 | | 1 | Art | Taxom |
| Cheyletidae Leach, 1815 | Raubmilben | 346 | Arten | Taxom |
| Chirodiscidae Trouessart, 1892 | | 45 | Arten | Taxom |
| Chortoglyphidae Berlese, 1897 | | 6 | Arten | Taxom |
| Chulacaridae Fuangarworn,..., 2016 | | 1 | Art | Taxom |
| Cillibidae Trägårdh, 1944 | | 1 | Art | Taxom |
| Cloacaridae Camin, Moss,..., 1967 | | 4 | Arten | Taxom |
| Cocceupodidae Jesionowska, 2010 | | 21 | Arten | Taxom |
| Collohmanniidae Grandjean, 1958 | | 2 | Arten | Taxom |
| Cosmochthoniidae Grandjean, 1946 | | 39 | Arten | Taxom |
| Crotoniidae Thorell, 1876 | | 47 | Arten | Taxom |
| Cryptognathidae Luxton, 1973 | | 43 | Arten | Taxom |
| Ctenacaridae Grandjean, 1954 | | 7 | Arten | Taxom |
| Ctenobelbidae Grandjean, 1965 | | 34 | Arten | Taxom |
| Cunaxidae Thor, 1902 | | 99 | Arten | Taxom |
| Cuneoppiidae Balogh, 1983 | | 1 | Art | Taxom |
| Cymbaeremaeidae Sellnick, 1928 | | 39 | Arten | Taxom |
| Damaeidae Berlese, 1896 | | 295 | Arten | Taxom |
| Damaeolidae Grandjean, 1965 | | 12 | Arten | Taxom |
| Dampfiellidae Balogh, 1961 | | 14 | Arten | Taxom |
| Dasythyreidae Walter & Gerson, 1998 | | 2 | Arten | Taxom |
| Demodecidae Nicolet, 1855 | | 77 | Arten | Taxom |
| Deraiophoridae Trägårdh, 1952 | | 23 | Arten | Taxom |
| Dermanyssidae Kolenati, 1859 | | 45 | Arten | Taxom |
| Dermationidae Fain, 1965 | | 3 | Arten | Taxom |
| Dermoglyphidae Mégnin & Tro..., 1884 | | 2 | Arten | Taxom |
| Diarthrophallidae Trägårdh, 1946 | | 2 | Arten | Taxom |
| Digamasellidae Evans, 1957 | | 25 | Arten | Taxom |
| Dinychidae Berlese, 1916 | | 6 | Arten | Taxom |
| Diplogyniidae Trägårdh, 1941 | | 3 | Arten | Taxom |
| Diptilomiopidae Boczek, 1964 | | 161 | Arten | Taxom |
| Dolichocybidae Mahunka, 1970 | | 8 | Arten | Taxom |
| Drymobatidae J. & P. Balogh, 1984 | | 3 | Arten | Taxom |
| Dytiscacaridae Hajikanbar a..., 2018 | | 1 | Art | Taxom |
| Echimyopodidae Fain, 1967 | | 2 | Arten | Taxom |
| Eniochthoniidae Grandjean, 1947 | | 8 | Arten | Taxom |
| Entonyssidae Ewing, 1922 | | 9 | Arten | Taxom |
| Epicriidae Berlese, 1885 | | 9 | Arten | Taxom |
| Epidermoptidae Trouessart, 1892 | | 3 | Arten | Taxom |
| Epilohmanniidae Oudemans, 1923 | | 38 | Arten | Taxom |
| Epimerellidae Ayyildiz & L..., 1989 | | 10 | Arten | Taxom |
| Epimyodicidae Fain, Lukosc..., 1982 | | 3 | Arten | Taxom |
| Eremaeidae Oudemans, 1900 | | 36 | Arten | Taxom |
| Eremaeozetidae Piffl, 1972 | | 18 | Arten | Taxom |
| Eremellidae Balogh, 1961 | | 8 | Arten | Taxom |
| Eremobelbidae Balogh, 1961 | | 30 | Arten | Taxom |
| Eremulidae Grandjean, 1965 | | 29 | Arten | Taxom |
| Ereynetidae Schrank, 1776 | | 4 | Arten | Taxom |
| Eriophyidae Nalepa, 1898 | Gallmilben | 788 | Arten | Taxom |
| Erythracaridae (Oudemans, 1936) | | 8 | Arten | Taxom |
| Erythraeidae Oudemans, 1902 | | 520 | Arten | Taxom |
| Eulohmanniidae Grandjean, 1931 | | 2 | Arten | Taxom |
| Eupalopsellidae Willmann, 1952 | | 28 | Arten | Taxom |
| Euphthiracaridae Jacot, 1930 | | 84 | Arten | Taxom |
| Eupodidae Strandtmann, 1967 | Laufmilben | 53 | Arten | Taxom |
| Eustathiidae Oudemans, 1905 | | 5 | Arten | Taxom |
| Eutegaeidae Balogh, 1965 | | 2 | Arten | Taxom |
| Eviphididae Berlese, 1913 | | 39 | Arten | Taxom |
| Eylaidae Leach, 1815 | | 11 | Arten | Taxom |
| Falculiferidae Oudemans, 1905 | | 5 | Arten | Taxom |
| Fedrizziidae Trägårdh, 1937 | | 3 | Arten | Taxom |
| Feltriidae Viets, 1926 | | 13 | Arten | Taxom |
| Fortuyniidae Hammen, 1963 | | 17 | Arten | Taxom |
| Freyanidae Dubinin, 1953 | | 2 | Arten | Taxom |
| Frontipodopsidae Viets, 1931 | | 1 | Art | Taxom |
| Gabuciniidae Gaud & Atyeo, 1975 | | 1 | Art | Taxom |
| Galumnellidae Piffl, 1970 | | 29 | Arten | Taxom |
| Galumnidae Jacot, 1925 | | 328 | Arten | Taxom |
| Gastronyssidae Fain, 1956 | | 7 | Arten | Taxom |
| Gehypochthoniidae Strenzke, 1963 | | 4 | Arten | Taxom |
| Glycyphagidae De Geer, 1778 | | 38 | Arten | Taxom |
| Granuloppiidae Balogh, 1983 | | 18 | Arten | Taxom |
| Gustaviidae Oudemans, 1900 | | 9 | Arten | Taxom |
| Gymnodamaeidae Grandjean, 1954 | | 49 | Arten | Taxom |
| Haemogamasidae Oudemans, 1939 | | 3 | Arten | Taxom |
| Halacaridae Murray, 1877 | Meeresmilben | 100 | Arten | Taxom |
| Halarachnidae Oudemans, 1906 | | 9 | Arten | Taxom |
| Haplochthoniidae Van der Hammen, 1959 | | 13 | Arten | Taxom |
| Haplozetidae Grandjean, 1936 | | 185 | Arten | Taxom |
| Harpagopalpidae Viets, 1924 | | 1 | Art | Taxom |
| Harpirhynchidae Dubinin, 1957 | | 45 | Arten | Taxom |
| Hemileiidae (J. & P. Balogh, 1984) | | 66 | Arten | Taxom |
| Hemisarcoptidae Oudemans, 1904 | | 16 | Arten | Taxom |
| Hermanniellidae Grandjean, 1934 | | 33 | Arten | Taxom |
| Hermanniidae Sellnick, 1928 | | 67 | Arten | Taxom |
| Heterobelbidae Balogh, 1961 | | 5 | Arten | Taxom |
| Heterocheylidae Trägårdh, 1950 | | 2 | Arten | Taxom |
| Heterochthoniidae (Grandjean, 1954) | | 6 | Arten | Taxom |
| Heterocoptidae Fain, 1967 | | 20 | Arten | Taxom |
| Heterozerconidae Berlese, 1892 | | 2 | Arten | Taxom |
| Hirstionyssidae (Evans & Till, 1966) | | 1 | Art | Taxom |
| Histiostomatidae Berlese, 1897 | | 249 | Arten | Taxom |
| Holothyridae Thorell, 1882 | | 1 | Art | Taxom |
| Homocaligidae Wood, 1969 | | 6 | Arten | Taxom |
| Humerobatidae Grandjean, 1970 | | 32 | Arten | Taxom |
| Hungarobelbidae (Miko & Travé, 1996) | | 18 | Arten | Taxom |
| Hungarohydracaridae Motas & Tana..., 1959 | | 13 | Arten | Taxom |
| Hutufeideriidae Hirschmann, 1979 | | 4 | Arten | Taxom |
| Hyadesiidae Halbert, 1915 | | 14 | Arten | Taxom |
| Hydrachnidae Leach, 1815 | | 23 | Arten | Taxom |
| Hydrodromidae Viets, 1936 | | 4 | Arten | Taxom |
| Hydrovolziidae Thor, 1905 | | 3 | Arten | Taxom |
| Hydrozetidae Grandjean, 1954 | | 15 | Arten | Taxom |
| Hydryphantidae Piersig, 1896 | | 61 | Arten | Taxom |
| Hygrobatidae Koch, 1842 | | 140 | Arten | Taxom |
| Hypochthoniidae Berlese, 1910 | | 19 | Arten | Taxom |
| Hypoderatidae (Murray, 1877) | | 2 | Arten | Taxom |
| Hypoderidae Murray, 1877 | | 2 | Arten | Taxom |
| Hystrichonyssidae Keegan, Yunk..., 1960 | | 1 | Art | Taxom |
| Ichthyostomatogasteridae (Sellnick, 1953) | | 0 | Arten | Taxom |
| Iolinidae Pritchard, 1956 | | 12 | Arten | Taxom |
| Ixodidae C. L. Koch, 1844 | Holzböcke | 352 | Arten | Taxom |
| Ixodorhynchidae Ewing, 1923 | | 5 | Arten | Taxom |
| Johnstonianidae Thor, 1935 | | 5 | Arten | Taxom |
| Kantacaridae Imamura, 1959 | | 1 | Art | Taxom |
| Knemidokoptidae (Lavoipierre ..., 1951) | | 5 | Arten | Taxom |
| Kodiakellidae Hammer, 1967 | | 1 | Art | Taxom |
| Kramerellidae Gaud & Mouchet, 1961 | | 0 | Arten | Taxom |
| Krendowskiidae Viets, 1926 | | 1 | Art | Taxom |
| Kytoditidae (Oudemans, 1908) | | 0 | Arten | Taxom |
| Labidostommatidae Oudemans, 1904 | | 32 | Arten | Taxom |
| Laelapidae Berlese, 1892 | | 308 | Arten | Taxom |
| Lamellareidae Balogh, 1972 | | 2 | Arten | Taxom |
| Laminosioptidae Vitzthum, 1931 | | 2 | Arten | Taxom |
| Lardoglyphidae Oudemans, 1927 | | 3 | Arten | Taxom |
| Lebertiidae Thor, 1900 | | 18 | Arten | Taxom |
| Leeuwenhoekiidae Womersley, 1944 | | 115 | Arten | Taxom |
| Leptolaelapidae Karg, 1978 | | 1 | Art | Taxom |
| Liacaridae Sellnick, 1928 | | 101 | Arten | Taxom |
| Licneremaeidae Grandjean, 1931 | | 9 | Arten | Taxom |
| Licnobelbidae (Grandjean, 1965) | | 3 | Arten | Taxom |
| Licnodamaeidae (Grandjean, 1954) | | 32 | Arten | Taxom |
| Liebstadiidae J. & P. Balogh, 1984 | | 20 | Arten | Taxom |
| Limnesiidae Thor, 1900 | | 50 | Arten | Taxom |
| Limnocharidae Grube, 1859 | | 5 | Arten | Taxom |
| Limnozetidae Thor, 1937 | | 12 | Arten | Taxom |
| Liodidae Grandjean, 1954 | | 1 | Art | Taxom |
| Listrophoridae Mégnin & Tro..., 1884 | | 37 | Arten | Taxom |
| Lohmanniidae Berlese, 1916 | | 167 | Arten | Taxom |
| Lyroppiidae Balogh, 1983 | | 3 | Arten | Taxom |
| Machadobelbidae Balogh, 1972 | | 12 | Arten | Taxom |
| Machuellidae Balogh, 1983 | | 6 | Arten | Taxom |
| Macrochelidae Vitzthum, 1930 | | 73 | Arten | Taxom |
| Macrodinychidae Hirschmann, 1979 | | 9 | Arten | Taxom |
| Macronyssidae Oudemans, 1936 | | 109 | Arten | Taxom |
| Malaconothridae Berlese, 1916 | | 108 | Arten | Taxom |
| Mecognathidae Gerson & Walter, 1998 | | 1 | Art | Taxom |
| Megisthanidae Berlese, 1914 | | 3 | Arten | Taxom |
| Melicharidae (Hirschmann, 1962) | | 104 | Arten | Taxom |
| Mesoplophoridae Ewing, 1917 | | 46 | Arten | Taxom |
| Metagynuridae Baker & Wharton, 1952 | | 4 | Arten | Taxom |
| Micreremidae Grandjean, 1954 | | 6 | Arten | Taxom |
| Microdispidae Cross, 1965 | | 3 | Arten | Taxom |
| Micropsammidae Coineau & Th..., 1983 | | 1 | Art | Taxom |
| Microtegeidae Balogh, 1972 | | 20 | Arten | Taxom |
| Microtrombidiidae Womersley, 1936 | | 13 | Arten | Taxom |
| Microzetidae Grandjean, 1936 | | 72 | Arten | Taxom |
| Mideidae Thor, 1911 | | 1 | Art | Taxom |
| Mideopsidae Koenike, 1910 | | 47 | Arten | Taxom |
| Mochlozetidae Grandjean, 1960 | | 34 | Arten | Taxom |
| Momoniidae Viets, 1926 | | 5 | Arten | Taxom |
| Mycobatidae Grandjean, 1954 | | 3 | Arten | Taxom |
| Myobiidae Megnin, 1877 | | 100 | Arten | Taxom |
| Myocoptidae Gunther, 1942 | | 8 | Arten | Taxom |
| Nanhermanniidae Sellnick, 1928 | | 46 | Arten | Taxom |
| Nanohystricidae Norton & Fua..., 2015 | | 1 | Art | Taxom |
| Nanorchestidae Luxton, 1984 | | 15 | Arten | Taxom |
| Nehypochthoniidae Norton & Metz, 1980 | | 2 | Arten | Taxom |
| Nematalycidae Strenzke, 1954 | | 4 | Arten | Taxom |
| Nenteriidae Hirschmann, 1979 | | 19 | Arten | Taxom |
| Neoliodidae (Sellnick, 1928) | | 24 | Arten | Taxom |
| Neopygmephoridae Cross, 1965 | | 21 | Arten | Taxom |
| Neothrombiidae Feider, 1959 | | 5 | Arten | Taxom |
| Neotrombidiidae Feider, 1955 | | 0 | Arten | Taxom |
| Niphocepheidae Travé, 1959 | | 5 | Arten | Taxom |
| Nippobodidae Aoki, 1959 | | 23 | Arten | Taxom |
| Nipponacaridae Imamura, 1959 | | 3 | Arten | Taxom |
| Nodocepheidae Piffl, 1972 | | 2 | Arten | Taxom |
| Nosybeidae Mahunka, 1993 | | 1 | Art | Taxom |
| Nosybelbidae Mahunka, 1994 | | 95 | Arten | Taxom |
| Nothridae Berlese, 1896 | | 49 | Arten | Taxom |
| Nuttalliellidae Schulze, 1935 | | 1 | Art | Taxom |
| Ochrolichidae Gaud & Atyeo, 1978 | | 1 | Art | Taxom |
| Oconnoriidae J. Gaud, W. ..., 1989 | | 1 | Art | Taxom |
| Oehserchestidae Kethley, 1977 | | 1 | Art | Taxom |
| Ologamasidae Ryke, 1962 | | 122 | Arten | Taxom |
| Omartacaridae Cook, 1963 | | 1 | Art | Taxom |
| Opilioacaridae With, 1902 | | 13 | Arten | Taxom |
| Oplitidae Johnston, 1968 | | 1 | Art | Taxom |
| Oppiidae Sellnick, 1937 | | 658 | Arten | Taxom |
| Oribatellidae Jacot, 1925 | | 109 | Arten | Taxom |
| Oribatulidae Thor, 1929 | | 154 | Arten | Taxom |
| Oribellidae (Kunst, 1971) | | 38 | Arten | Taxom |
| Oribotritiidae Grandjean, 1954 | | 104 | Arten | Taxom |
| Oripodidae Jacot, 1925 | | 41 | Arten | Taxom |
| Otocepheidae Balogh, 1961 | | 332 | Arten | Taxom |
| Otopheidomenidae Treat, 1955 | | 5 | Arten | Taxom |
| Oxidae Viets, 1926 | | 12 | Arten | Taxom |
| Oxyameridae Aoki, 1965 | | 9 | Arten | Taxom |
| Pachylaelapidae Berlese, 1913 | | 223 | Arten | Taxom |
| Palaeacaridae Grandjean, 1932 | | 6 | Arten | Taxom |
| Papillonotidae Balogh, 1983 | | 2 | Arten | Taxom |
| Parakalummidae Grandjean, 1936 | | 49 | Arten | Taxom |
| Paramegistidae Trägårdh, 1946 | | 7 | Arten | Taxom |
| Parasitidae Oudemans, 1901 | Käfermilben | 137 | Arten | Taxom |
| Paratydeidae Baker, 1949 | | 11 | Arten | Taxom |
| Parholaspididae Evans, 1956 | | 165 | Arten | Taxom |
| Parhypochthoniidae Grandjean, 1932 | | 3 | Arten | Taxom |
| Passalozetidae Grandjean, 1954 | | 38 | Arten | Taxom |
| Pediculochelidae Lavoipierre, 1946 | | 9 | Arten | Taxom |
| Peloppiidae Balogh, 1943 | | 6 | Arten | Taxom |
| Penthaleidae Oudemans, 1931 | Sandmilben | 17 | Arten | Taxom |
| Penthalodidae Strandtmann, 1964 | | 8 | Arten | Taxom |
| Perlohmanniidae Grandjean, 1954 | | 10 | Arten | Taxom |
| Phaulodinychidae (Berlese, 1917) | | 0 | Arten | Taxom |
| Phenopelopidae Petrunkevitch, 1955 | | 62 | Arten | Taxom |
| Pheroliodidae Paschoal, 1987 | | 6 | Arten | Taxom |
| Phthiracaridae Perty, 1841 | | 353 | Arten | Taxom |
| Phytoptidae Manson, 1970 | | 29 | Arten | Taxom |
| Phytoseiidae Berlese, 1916 | | 262 | Arten | Taxom |
| Pionidae Thor, 1900 | | 38 | Arten | Taxom |
| Plasmobatidae Grandjean, 1961 | | 3 | Arten | Taxom |
| Plateremaeidae Trägårdh, 1931 | | 17 | Arten | Taxom |
| Platyameridae Balogh & Balogh, 1983 | | 13 | Arten | Taxom |
| Pneumocoptidae Fain, 1957 | | 0 | Arten | Taxom |
| Podapolipidae Husband, 1990 | | 28 | Arten | Taxom |
| Podocinidae Berlese, 1913 | | 30 | Arten | Taxom |
| Podopterotegaeidae (Piffl, 1972) | | 4 | Arten | Taxom |
| Polyaspididae Berlese, 1913 | | 19 | Arten | Taxom |
| Polypterozetidae Grandjean, 1959 | | 1 | Art | Taxom |
| Pomerantziidae Baker, 1949 | | 2 | Arten | Taxom |
| Pontarachnidae Koenike, 1910 | | 16 | Arten | Taxom |
| Proctophyllodidae Trouessart &..., 1884 | | 24 | Arten | Taxom |
| Protoplophoridae (Ewing, 1917) | | 19 | Arten | Taxom |
| Protoribatidae J. & P. Balogh, 1984 | | 106 | Arten | Taxom |
| Psammochthoniidae Fuangarworn ..., 2013 | | 1 | Art | Taxom |
| Pseudocheylidae Oudemans, 1909 | | 9 | Arten | Taxom |
| Pseudoppiidae (Mahunka, 1975) | | 3 | Arten | Taxom |
| Psorergatidae Womersley, 1941 | | 42 | Arten | Taxom |
| Psoroptidae Hering, 1838 | Räudemilben | 11 | Arten | Taxom |
| Psoroptoididae Gaud, 1958 | | 4 | Arten | Taxom |
| Pterolichidae Trouessart, 1899 | | 26 | Arten | Taxom |
| Pteronyssidae Oudemans, 1941 | | 22 | Arten | Taxom |
| Pterygosomatidae Womersley, 1941 | Geckomilben | 13 | Arten | Taxom |
| Ptiloxenidae Gaud, 1982 | | 2 | Arten | Taxom |
| Punctoribatidae Thor, 1937 | | 72 | Arten | Taxom |
| Pyemotidae Newport, 1850 | | 4 | Arten | Taxom |
| Pygmephoridae Krczal, 1964 | | 16 | Arten | Taxom |
| Pyroglyphidae Cunliffe, 1958 | | 17 | Arten | Taxom |
| Quadroppiidae Balogh, 1983 | | 35 | Arten | Taxom |
| Raillietiidae Vitzthum, 1943 | | 2 | Arten | Taxom |
| Raphignathidae Kramer, 1877 | | 74 | Arten | Taxom |
| Resinacaridae Mahunka, 1976 | | 1 | Art | Taxom |
| Rhagidiidae Zacharda, 1980 | | 102 | Arten | Taxom |
| Rhinonyssidae Trouessart, 1895 | | 212 | Arten | Taxom |
| Rhodacaridae Oudemans, 1902 | | 48 | Arten | Taxom |
| Rhynchoribatidae Balogh, 1961 | | 8 | Arten | Taxom |
| Rosensteiniidae Cooreman, 1954 | | 16 | Arten | Taxom |
| Sarcoptidae Megnin, 1877 | Krätzemilben | 67 | Arten | Taxom |
| Scheloribatidae Jacot, 1935 | | 202 | Arten | Taxom |
| Schizogyniidae Trägårdh, 1950 | | 1 | Art | Taxom |
| Scutacaridae Paoli, 1911 | | 89 | Arten | Taxom |
| Scutoverticidae Grandjean, 1954 | | 50 | Arten | Taxom |
| Sejidae Berlese, 1885 | | 7 | Arten | Taxom |
| Selenoribatidae Schuster, 1963 | | 21 | Arten | Taxom |
| Siteroptidae Martin, 1978 | | 16 | Arten | Taxom |
| Smarididae Kramer, 1878 | | 20 | Arten | Taxom |
| Sperchontidae Thor, 1900 | | 34 | Arten | Taxom |
| Sphaerochthoniidae Grandjean, 1947 | | 11 | Arten | Taxom |
| Spinozetidae Balogh, 1972 | | 6 | Arten | Taxom |
| Spinturnicidae Oudemans, 1902 | Flughautmilben | 54 | Arten | Taxom |
| Steganacaridae (Niedbała, 1986) | | 10 | Arten | Taxom |
| Stigmaeidae Wood, 1967 | | 490 | Arten | Taxom |
| Stigmocheylidae (Kethley, 1990) | | 2 | Arten | Taxom |
| Strandtmanniidae M. Zacharda, 1979 | | 1 | Art | Taxom |
| Suctobelbidae Jacot, 1938 | | 261 | Arten | Taxom |
| Suidasiidae Hughes, 1948 | | 3 | Arten | Taxom |
| Symbioribatidae Aoki, 1966 | | 4 | Arten | Taxom |
| Synichotritiidae Walker, 1965 | | 15 | Arten | Taxom |
| Syringobiidae Trouessart, 1897 | | 5 | Arten | Taxom |
| Syringophilidae Lavoipierre, 1953 | | 196 | Arten | Taxom |
| Tanaupodidae Thor, 1935 | | 2 | Arten | Taxom |
| Tarsocheylidae Berlese, 1904 | | 1 | Art | Taxom |
| Tarsonemidae Kramer, 1877 | Fadenfußmilben | 145 | Arten | Taxom |
| Tectocepheidae Grandjean, 1954 | | 16 | Arten | Taxom |
| Tegeocranellidae P. Balogh, 1987 | | 6 | Arten | Taxom |
| Tegoribatidae Grandjean, 1954 | | 31 | Arten | Taxom |
| Teneriffiidae Thor, 1911 | | 17 | Arten | Taxom |
| Tenuialidae Jacot, 1929 | | 13 | Arten | Taxom |
| Tenuipalpidae Berlese, 1913 | Falsche Spinnmilben | 464 | Arten | Taxom |
| Teratoppiidae Balogh, 1983 | | 1 | Art | Taxom |
| Teratothyadidae Viets, 1929 | | 1 | Art | Taxom |
| Terpnacaridae Grandjean, 1939 | | 4 | Arten | Taxom |
| Tetracondylidae Aoki, 1961 | | 7 | Arten | Taxom |
| Tetranychidae Donnadieu, 1875 | Spinnmilben | 762 | Arten | Taxom |
| Thoracosathesidae Gaud & Mouchet, 1959 | | 1 | Art | Taxom |
| Thyrisomidae Grandjean, 1953 | | 17 | Arten | Taxom |
| Thysanocercidae Atyeo & Pete..., 1972 | | 0 | Arten | Taxom |
| Tokunocepheidae Aoki, 1966 | | 2 | Arten | Taxom |
| Torrenticolidae Thor, 1902 | | 133 | Arten | Taxom |
| Trachytidae Tragärdh, 1938 | | 3 | Arten | Taxom |
| Trachyuropodidae Kramer, 1881 | | 47 | Arten | Taxom |
| Trematuridae Berlese, 1917 | | 77 | Arten | Taxom |
| Trhypochthoniidae Willmann, 1931 | | 56 | Arten | Taxom |
| Trichthoniidae (Lee, 1982) | | 2 | Arten | Taxom |
| Trigonuropodidae Hirschmann, 1979 | | 17 | Arten | Taxom |
| Triophtydeidae (André, 1980) | | 1 | Art | Taxom |
| Triophytydeidae | | 0 | Arten | Taxom |
| Triplogyniidae Funk, 1977 | | 1 | Art | Taxom |
| Trizetidae Ewing, 1917 | | 1 | Art | Taxom |
| Trombellidae Thor, 1935 | | 2 | Arten | Taxom |
| Trombiculidae Ewing, 1929 | Herbstmilben | 1658 | Arten | Taxom |
| Trombidiidae Leach, 1815 | Laufmilben | 44 | Arten | Taxom |
| Trouessartiidae Gaud, 1957 | | 5 | Arten | Taxom |
| Tuckerellidae Baker & Prit..., 1953 | | 8 | Arten | Taxom |
| Turbinoptidae Fain, 1957 | | 2 | Arten | Taxom |
| Tydeidae Kramer, 1877 | Staubmilben | 38 | Arten | Taxom |
| Unduloribatidae Kunst, 1971 | | 6 | Arten | Taxom |
| Unguicheylidae Khaustov Vor..., 2023 | | 1 | Art | Taxom |
| Unionicolidae Oudemans, 1909 | | 104 | Arten | Taxom |
| Urodinychidae Berlese, 1917 | | 86 | Arten | Taxom |
| Uropodellidae (Camin, 1955) | | 1 | Art | Taxom |
| Uropodidae Kramer, 1881 | | 119 | Arten | Taxom |
| Varroidae Delfinado & ..., 1974 | | 7 | Arten | Taxom |
| Veigaiidae Oudemans, 1939 | | 27 | Arten | Taxom |
| Vexillariidae Gaud & Mouchet, 1959 | | 0 | Arten | Taxom |
| Walchiidae Ewing, 1946 | | 4 | Arten | Taxom |
| Wettinidae Cook, 1956 | | 1 | Art | Taxom |
| Winterschmidtiidae Oudemans, 1923 | | 82 | Arten | Taxom |
| Xenillidae Woolley & Hi..., 1966 | | 33 | Arten | Taxom |
| Xenocaligonellididae González, 1978 | | 3 | Arten | Taxom |
| Xolalgidae Dubinin, 1953 | | 7 | Arten | Taxom |
| Xylobatidae J. Balogh & ..., 1984 | | 5 | Arten | Taxom |
| Zerconidae Berlese, 1892 | | 108 | Arten | Taxom |
| Zetomotrichidae Grandjean, 1934 | | 28 | Arten | Taxom |
| Zetorchestidae Michael, 1898 | | 21 | Arten | Taxom |
