Árva County was an administrative county (comitatus) of the Kingdom of Hungary since the 14th century until 1920. Its territory is now in northern Slovakia and southern Poland. Today, the Slovak name is only used as an informal designation of the corresponding territory.

Turóc, Slovak: Turiec, Latin: Thurotzium/comitatus Thurociensis, German: Turz) was an administrative county (comitatus) of the Kingdom of Hungary. Its territory is now in north-western Slovakia, where the corresponding Slovak name Turiec is only an informal designation of the corresponding territory.