Chigyo-koku indicates the provincial system and province in ancient and medieval Japan in which dominant nobles, shrines or temples acquired chigyo-ken (also called Kokumu-ken or rimu) (the right to manage the province) and obtained their revenues from there.
知行国（ちぎょうこく）とは、古代・中世の日本において、有力貴族・寺社・武家が特定の令制国の知行権（国務権・吏務ともいう）を獲得し収益を得た制度、およびその国。