| Ademosynidae Ponomarenko, 1968 | | 2 | Species | Taxom |
| Aderidae Winkler, 1927 | Ant-like leaf beetles | 93 | Species | Taxom |
| Agyrtidae Thomson, 1859 | Primitive carrion beetles | 22 | Species | Taxom |
| Alexiidae Imhoff, 1856 | Minute bark beetles | 2 | Species | Taxom |
| Amphizoidae LeConte, 1853 | Stout-stream beetles | 3 | Species | Taxom |
| Anthicidae Latreille, 1819 | Ant beetles | 478 | Species | Taxom |
| Anthribidae Billberg, 1820 | Fungus Weevil | 314 | Species | Taxom |
| Aphodiidae Leach, 1815 | | 4 | Species | Taxom |
| Archeocrypticidae Kaszab, 1964 | Ancient Fungus Beetles | 5 | Species | Taxom |
| Artematopodidae Lacordaire, 1857 | Soft bodied plant beetle | 14 | Species | Taxom |
| Attelabidae Billberg, 1820 | Leaf Rolling Weevil | 492 | Species | Taxom |
| Belidae Schönherr, 1826 | Belid Beetle | 58 | Species | Taxom |
| Biphyllidae LeConte, 1861 | Biphyllid beetles | 4 | Species | Taxom |
| Bolboceratidae (Mulsant, 1842) | Dor beetle | 3 | Species | Taxom |
| Boridae C. G. Thomson, 1859 | Borids | 2 | Species | Taxom |
| Bostrichidae Latreille, 1802 | Auger beetles | 262 | Species | Taxom |
| Bothrideridae Erichson, 1845 | Cocoon-forming beetles | 20 | Species | Taxom |
| Brachyceridae (Billberg, 1820) | Brachycerids | 2 | Species | Taxom |
| Brachypsectridae LeConte & Horn, 1883 | Texas beetle | 1 | Species | Taxom |
| Brachypteridae (Erichson, 1845) | Short-winged Flower Beetles | 22 | Species | Taxom |
| Brentidae Billberg, 1820 | Brenthidae | 429 | Species | Taxom |
| Buprestidae Leach, 1815 | Flat-headed wood-borers | 1729 | Species | Taxom |
| Byrrhidae Latreille, 1804 | Moss beetles | 121 | Species | Taxom |
| Byturidae Jacquelin du..., 1858 | Fruit worms | 11 | Species | Taxom |
| Callirhipidae Emden, 1924 | Callirhipid beetles | 12 | Species | Taxom |
| Cantharidae Imhoff, 1856 | Cantharids | 747 | Species | Taxom |
| Carabidae Latreille, 1802 | Carabid beetles | 6150 | Species | Taxom |
| Caridae Thompson, 1992 | | 1 | Species | Taxom |
| Cerambycidae Latreille, 1802 | Long Horn beetles | 4198 | Species | Taxom |
| Cerophytidae Latreille, 1834 | Cerophytid beetles | 5 | Species | Taxom |
| Cerylonidae Billberg, 1820 | Cerylid Kingfishers | 57 | Species | Taxom |
| Cetoniidae (Leach, 1815) | Flower beetles | 1 | Species | Taxom |
| Chalcodryidae Watt, 1974 | | 0 | Species | Taxom |
| Chelonariidae Blanchard, 1845 | Chelonarid beetles | 11 | Species | Taxom |
| Chrysomelidae Latreille, 1802 | Casebearers | 3741 | Species | Taxom |
| Ciidae Leach, 1819 | Minute tree fungus beetles | 184 | Species | Taxom |
| Clambidae Fischer, 1821 | Fringe-winged beetles | 25 | Species | Taxom |
| Cleridae Latreille, 1802 | Checkered Beetle | 477 | Species | Taxom |
| Cneoglossidae Champion, 1897 | | 1 | Species | Taxom |
| Coccinellidae Latreille, 1807 | Coccinelles | 818 | Species | Taxom |
| Coptoclavidae Ponomarenko, 1961 | Extinct family | 1 | Species | Taxom |
| Corylophidae LeConte, 1852 | Hooded beetles | 137 | Species | Taxom |
| Cryptophagidae Kirby, 1937 | Mould beetles | 310 | Species | Taxom |
| Cucujidae Latreille, 1802 | Flat bark beetles | 176 | Species | Taxom |
| Cupedidae Laporte, 1836 | Cupedids | 17 | Species | Taxom |
| Curculionidae Latreille, 1802 | Ambrosia beetles | 9843 | Species | Taxom |
| Dascillidae Guérin-Ménev..., 1843 | Orchid beetles | 11 | Species | Taxom |
| Dermestidae Hope, 1840 | Carpet beetles | 322 | Species | Taxom |
| Derodontidae LeConte, 1861 | Tooth-neck fungus beetles | 11 | Species | Taxom |
| Diphyllostomatidae Holloway, 1972 | False stag beetles | 4 | Species | Taxom |
| Discolomatidae Horn, 1878 | | 5 | Species | Taxom |
| Dryophthoridae (Schönherr, 1825) | Palm weevils | 5 | Species | Taxom |
| Dryopidae Billberg, 1820 | Long toed water beetle | 54 | Species | Taxom |
| Dytiscidae Leach, 1815 | Diving beetles | 1201 | Species | Taxom |
| Elateridae Leach, 1815 | Click Beetle | 2046 | Species | Taxom |
| Elmidae Curtis, 1830 | Drive beetles | 252 | Species | Taxom |
| Endomychidae Leach, 1815 | False Ladybirds | 139 | Species | Taxom |
| Erotylidae Latreille, 1802 | Pleasing Fungus Beetle | 172 | Species | Taxom |
| Eucinetidae Lacordaire, 1857 | Plate-thigh beetle | 20 | Species | Taxom |
| Eucnemidae Eschscholtz, 1829 | Click Beetles | 118 | Species | Taxom |
| Eulichadidae Crowson, 1973 | Forest stream beetle | 2 | Species | Taxom |
| Georyssidae Laporte, 1819 | Minute mud-loving beetles | 2 | Species | Taxom |
| Geotrupidae Latreille, 1802 | Dor beetles | 168 | Species | Taxom |
| Glaphyridae MacLeay, 1819 | Bumble bee scarab beetle | 15 | Species | Taxom |
| Glaphyropteridae Pongracz, 1935 | | 1 | Species | Taxom |
| Glaresidae Kolbe, 1905 | Enigmatic scarab beetle | 33 | Species | Taxom |
| Gyrinidae Latreille, 1802 | Whirligig beetle | 109 | Species | Taxom |
| Haliplidae Aubé, 1836 | Crawling Water Beetle | 106 | Species | Taxom |
| Helophoridae (Leach, 1815) | Water scavenger beetles | 1 | Species | Taxom |
| Helotidae Reitter, 1876 | | 3 | Species | Taxom |
| Heteroceridae MacLeay, 1825 | Mud beetles | 94 | Species | Taxom |
| Histeridae Gyllenhal, 1808 | Clown beetle | 1179 | Species | Taxom |
| Hybosoridae Erichson, 1847 | Pill scarab beetles | 46 | Species | Taxom |
| Hydraenidae Mulsant, 1844 | Cascade Beetles | 198 | Species | Taxom |
| Hydrophilidae Latreille, 1802 | Silver Water Beetles | 702 | Species | Taxom |
| Hydroscaphidae LeConte, 1874 | Skiff beetle | 2 | Species | Taxom |
| Ithyceridae (Schönherr, 1826) | New York weevil | 2 | Species | Taxom |
| Jacobsoniidae Heller, 1926 | Jacobson's beetles | 2 | Species | Taxom |
| Kateretidae Kirkby, 1837 | Pollen Beetles | 4 | Species | Taxom |
| Labradorocoleidae Ponomarenko, 1969 | | 1 | Species | Taxom |
| Laemophloeidae (Ganglbauer, 1899) | Lined flat bark beetles | 3 | Species | Taxom |
| Lampyridae Latreille, 1817 | Fireflies | 369 | Species | Taxom |
| Latridiidae Erichson, 1842 | Minute brown scavenger beetle | 260 | Species | Taxom |
| Leiodidae Fleming, 1821 | Round fungus beetles | 750 | Species | Taxom |
| Lepiceridae Hinton, 1936 | | 2 | Species | Taxom |
| Limnichidae Erichson, 1846 | Minute marsh loving beetle | 76 | Species | Taxom |
| Lucanidae Latreille, 1804 | Stag Beetle | 124 | Species | Taxom |
| Lutrochidae Kasap & Crowson, 1975 | Robust marsh loving beetle | 4 | Species | Taxom |
| Lycidae Laporte, 1836 | Lycid beetles | 195 | Species | Taxom |
| Lymexylidae Fleming, 1821 | Ship-timber beetle | 8 | Species | Taxom |
| Mauroniscidae Majer, 1995 | Mauroniscid Beetles | 8 | Species | Taxom |
| Megalopodidae Latreille, 1802 | Megalopodid Leaf Beetles | 20 | Species | Taxom |
| Melandryidae Leach, 1815 | False Darkling Beetle | 106 | Species | Taxom |
| Meloidae Gyllenhal, 1810 | Blister Beetle | 716 | Species | Taxom |
| Melolonthidae (Leach, 1817) | Chafers | 2 | Species | Taxom |
| Melyridae Leach, 1815 | Malachite Beetles | 647 | Species | Taxom |
| Micromalthidae Barber, 1913 | Micromalthid beetles | 1 | Species | Taxom |
| Monotomidae Laporte, 1840 | Minute Clubbed Beetles | 105 | Species | Taxom |
| Mordellidae Latreille, 1802 | Pintail beetles | 442 | Species | Taxom |
| Mycetophagidae Leach, 1815 | Hairy fungus beetle | 55 | Species | Taxom |
| Mycteridae Blanchard, 1845 | Mycterid beetles | 23 | Species | Taxom |
| Myraboliidae Lawrence and..., 1991 | | 0 | Species | Taxom |
| Nemonychidae Bedel, 1882 | Nemonychid weevils | 33 | Species | Taxom |
| Nitidulidae Latreille, 1802 | Nitidules | 422 | Species | Taxom |
| Nosodendridae Erichson, 1846 | Nosodendrid beetles | 10 | Species | Taxom |
| Noteridae C. G. Thomson, 1860 | Burrowing water beetle | 44 | Species | Taxom |
| Ochodaeidae Mulsant & Rey, 1870 | Sand-loving scarab beetle | 55 | Species | Taxom |
| Oedemeridae Latreille, 1810 | False Blister Beetle | 132 | Species | Taxom |
| Omethidae LeConte, 1861 | False fireflies | 12 | Species | Taxom |
| Ommatidae Sharp & Muir, 1912 | | 1 | Species | Taxom |
| Orsodacnidae Thomson, 1859 | Orsodacnid Leaf Beetles | 27 | Species | Taxom |
| Oxycorynidae (Schoenherr, 1840) | Oxycorynid weevils | 1 | Species | Taxom |
| Oxypeltidae Lacordaire, 1869 | | 2 | Species | Taxom |
| Passalidae Leach, 1815 | Bess beetle | 158 | Species | Taxom |
| Phalacridae Leach, 1815 | Shining flower beetles | 146 | Species | Taxom |
| Phengodidae LeConte, 1861 | Glow-worms | 98 | Species | Taxom |
| Phloeostichidae Reitter, 1911 | | 0 | Species | Taxom |
| Phycosecidae Crowson, 1952 | | 0 | Species | Taxom |
| Pleocomidae LeConte, 1861 | Rain beetle | 37 | Species | Taxom |
| Prionoceridae Lacaordaire, 1857 | | 1 | Species | Taxom |
| Prostomidae C. G. Thomson, 1859 | Jugular-horned beetle | 3 | Species | Taxom |
| Pselaphidae (Lameere, 1900) | Short-winged mold beetles | 3 | Species | Taxom |
| Psephenidae Lacordaire, 1854 | Water pennies | 33 | Species | Taxom |
| Ptiliidae Heer, 1843 | Feather-wing beetles | 192 | Species | Taxom |
| Ptilodactylidae Laporte, 1836 | Ptilodactylid beetles | 54 | Species | Taxom |
| Ptinidae Latreille, 1802 | Death-watch and Spider Beetles | 695 | Species | Taxom |
| Pyrochroidae Latreille, 1807 | Cardinal beetles | 71 | Species | Taxom |
| Pythidae Solier, 1834 | Dead log bark beetles | 10 | Species | Taxom |
| Rhipiceridae Latreille, 1834 | Cedar beetles | 11 | Species | Taxom |
| Rhipiphoridae Gemminger & ..., 1870 | Hump back beetles | 39 | Species | Taxom |
| Rhynchitidae Gistel, 1848 | Leaf-rolling weevils | 24 | Species | Taxom |
| Ripiphoridae Gemminger & ..., 1870 | Rhipiphoridae | 59 | Species | Taxom |
| Rutelidae (MacLeay, 1819) | | 104 | Species | Taxom |
| Salpingidae Leach, 1815 | Narrow-waisted bark beetle | 54 | Species | Taxom |
| Scarabaeidae Latreille, 1802 | Dung beetles | 4976 | Species | Taxom |
| Schizopodidae (LeConte, 1859) | False Jewel Beetles | 8 | Species | Taxom |
| Scirtidae Fleming, 1821 | Marsh Beetle | 114 | Species | Taxom |
| Scolytidae (Latreille, 1807) | Ambrosia | 3 | Species | Taxom |
| Scraptiidae Mulsant, 1856 | Antlike leaf beetles | 63 | Species | Taxom |
| Scydmaenidae (Leach, 1815) | Ant-like stone beetles | 519 | Species | Taxom |
| Silphidae Latreille, 1807 | Burying And Carrion Beetles | 102 | Species | Taxom |
| Silvanidae Kirby, 1837 | Flat bark beetles | 90 | Species | Taxom |
| Smicripidae Horn, 1879 | Palmetto beetle | 2 | Species | Taxom |
| Sphaeritidae Schuckard, 1839 | False clown beetle | 1 | Species | Taxom |
| Sphaeriusidae Erichson, 1845 | Minute Bog Beetles | 4 | Species | Taxom |
| Sphindidae Jacquelin du..., 1860 | Cryptic slime mold beetle | 12 | Species | Taxom |
| Staphylinidae Lameere, 1900 | Rove beetles | 8726 | Species | Taxom |
| Stenotrachelidae C. G. Thomson, 1859 | False long-horned beetles | 19 | Species | Taxom |
| Synchroidae Lacordaire, 1859 | Synchroa bark beetles | 1 | Species | Taxom |
| Synteliidae Lewis, 1882 | | 2 | Species | Taxom |
| Telegeusidae (LeConte, 1861) | Glowworm beetles | 16 | Species | Taxom |
| Tenebrionidae Latreille, 1802 | Darkling Beetle | 2607 | Species | Taxom |
| Teredidae Seidlitz, 1888 | | 6 | Species | Taxom |
| Tetratomidae Billberg, 1820 | Polypore fungus beetle | 52 | Species | Taxom |
| Thanerocleridae Chapin, 1921 | | 5 | Species | Taxom |
| Throscidae Laporte, 1840 | False metallic wood-boring beetles | 34 | Species | Taxom |
| Trachypachidae C. G. Thomson, 1857 | False ground beetle | 11 | Species | Taxom |
| Trogidae (MacLeay, 1819) | Gnawer beetles | 107 | Species | Taxom |
| Trogossitidae Latreille, 1802 | Bark gnawing beetle | 122 | Species | Taxom |
| Tshekardocoleidae Rohdendorf, 1944 | | 1 | Species | Taxom |
| Vesperidae Mulsant, 1839 | Vesperid longicorn beetles | 6 | Species | Taxom |
| Zopheridae Solier, 1834 | Cylindrical bark beetles | 277 | Species | Taxom |
