Crangonyctidae is a family of cave-dwelling freshwater amphipod crustaceans. It contains the following genera:Amurocrangonyx Sidorov & Holsinger, 2007 Bactrurus Hay, 1902 Crangonyx Bate, 1859 Lyurella Derzhavin, 1939 † Palaeogammarus Zaddach, 1864 Stygobromus Cope, 1872 Stygonyx Bousfield & Holsinger, 1989