Rhysodesmus is a genus of flat-backed millipedes in the family Xystodesmidae.

There are at least 90 described species in Rhysodesmus.,[1][2][3][4][5] ranging from El Salvador to the Southern United States.

[6] These 92 species belong to the genus Rhysodesmus: Data sources: i = ITIS,[1] c = Catalogue of Life,[2] g = GBIF,[3] b = Bugguide.net[4]