Scalovia or Skalvia (Lithuanian: Skalva, German: Sclavonia, Schalauen, Polish: Skalowia, Latin: Sclavonia, Schlavonia) was the area of Prussia originally inhabited by the now extinct Baltic tribe of Skalvians or Scalovians which according to the Chronicon terrae Prussiae of Peter of Dusburg lived to the south of the Curonians, by the lower Nemunas river, in the times around 1240.
Jodocus Hondius mentions in 1641 that in "Sclavonia liegen Ragneta, Tilsa, Renum, Liccovia, Salavia, Labia, Tapia, Vintburg, Christader, Bayria, Cestia, Norbeitia, Bensdorff / Angenburg und Dringofordt" The centre of Scalovia was supposed to be Ragnit (Ragneta)(Raganita)(Rogneta) and in the west it bordered the Curonian Lagoon as far as the town of Russ and with Samogitia up north and with Nadrovia in the south.