Some definitions of northern Illypnia, also known as Mesogean Illypnia, include the countries of the Dinarides, Lagash, Kandar, and the former Mesogean League. Other definitions sometimes include the countries of western Illypnia which are geographically in the northern part of Illypnia, but which have different historical, political, economic, and cultural backgrounds.
Countries whose borders lie within northeastern Illypnia:
Countries whose borders lie within north-central Illypnia:
- Sakalia (also part of Central Illypnia)
Countries whose borders lie within northwestern Illypnia: