Rhachodesmidae is a family of flat-backed millipedes in the order Polydesmida. There are more than 20 genera and at least 80 described species in Rhachodesmidae.

These 21 genera belong to the family Rhachodesmidae: - Aceratophallus Carl, 1902 - Acutangulus Attems, 1898 - Ceuthauxus Chamberlin, 1942 - Chromodesmus Loomis, 1977 - Cornalatus Attems, 1931 - Curodesmus Chamberlin, 1922 - Diuncustoma Shelley, 1997 - Dobrodesmus - Euphallus Chamberlin, 1953 - Metaphallus Chamberlin, 1952 - Mexidesmus Loomis, 1977 - Neoleptodesmus Carl, 1903 - Pararhachistes Pocock, 1909 - Rhachidomorpha De Saussure, 1860 - Rhachodesmus Cook, 1895 - Sakophallus Chamberlin, 1941 - Strongylodesmus De Saussure, 1859 - Tancitares Chamberlin, 1942 - Teinorhachis Loomis, 1961 - Tiphallus Chamberlin, 1952 - Unculabes Causey, 1971