JAPYDIA (anc. geog.), a western district of Illyricum anciently threefold; the first Japydia extending from the springs of the Timavus to Illyria; the second, from the river Arisia to the river Tedanus; and the third, called Inalpina, situated in mount Albius and the other Alps, which run out above Illyria. Japodes, or Japydes, the people. Now constituting the south part of Carniola, and the west of Austrian Croatia.