Cagayan Valley (Philippine region) ⬤ public ISO 3166-2 code: PH-02SubdivisionsProvince BatanesCagayanIsabelaNueva VizcayaQuirino Child topics: Batanes (Philippine province)Cagayan (Philippine province)Isabela (Philippine province)Nueva Vizcaya (Philippine province)Quirino (Philippine province) Parent topics: Serbia