Nueva Vizcaya is a province of the Philippines located in the Cagayan Valley region in Luzon. Its capital is Bayombong and borders, clockwise from the north, Ifugao, Isabela, Quirino, Aurora, Nueva Ecija, Pangasinan, and Benguet.

Nueva Vizcaya is subdivided into 15 municipalities.
| Regions and Provinces of Luzon | |
| Ilocos Region: | Ilocos Norte | Ilocos Sur | La Union | Pangasinan |
| Cagayan Valley: | Batanes | Cagayan | Isabela | Nueva Vizcaya | Quirino |
| Central Luzon: | Aurora | Bataan | Bulacan | Nueva Ecija | Pampanga | Tarlac | Zambales |
| CALABARZON: | Batangas | Cavite | Laguna | Quezon | Rizal |
| MIMAROPA: | Marinduque | Occidental Mindoro | Oriental Mindoro | Palawan | Romblon |
| Bicol Region: | Albay | Camarines Norte | Camarines Sur | Catanduanes | Masbate | Sorsogon |
| Cordillera Adm. Region: | Abra | Apayao | Benguet | Ifugao | Kalinga | Mountain Province |
| Metro Manila: | No provinces |