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Cagayan Valley Region — a designated region of the Philippines, located in the Luzon islands group of the northern Philippines.

v t e Cagayan Valley (Region II)
Regional center	Tuguegarao
Provinces	Batanes Cagayan Isabela Nueva Vizcaya Quirino
Independent component city	Santiago
Component cities	Cauayan Ilagan Tuguegarao
Provincial capitals	Basco Bayombong Cabarroguis Ilagan Tuguegarao
Municipalities	Abulug Aglipay Alcala Alfonso Castañeda Alicia Allacapan Ambaguio Amulung Angadanan Aparri Aritao Aurora Bagabag Baggao Ballesteros Bambang Basco Bayombong Benito Soliven Buguey Burgos Cabagan Cabarroguis Cabatuan Calayan Camalaniugan Claveria Cordon Delfin Albano Diadi Diffun Dinapigue Divilacan Dupax del Norte Dupax del Sur Echague Enrile Gamu Gattaran Gonzaga Iguig Itbayat Ivana Jones Kasibu Kayapa Lal-lo Lasam Luna Maconacon Maddela Mahatao Mallig Nagtipunan Naguilian Palanan Pamplona Peñablanca Piat Quezon (Isabela) Quezon (Nueva Vizcaya) Quirino Ramon Reina Mercedes Rizal Roxas Sabtang Saguday San Agustin San Guillermo San Isidro San Manuel San Mariano San Mateo San Pablo Sanchez-Mira Santa Ana Santa Fe Santa Maria Santa Praxedes Santa Teresita Santo Niño Santo Tomas Solana Solano Tuao Tumauini Uyugan Villaverde
Luzon, Philippines

v t e Regions of the Philippines
Luzon	I – Ilocos Region II – Cagayan Valley III – Central Luzon IV-A – Calabarzon V – Bicol Region CAR – Cordillera Administrative Region Mimaropa – Southwestern Tagalog Region NCR – National Capital Region
Visayas	VI – Western Visayas VII – Central Visayas VIII – Eastern Visayas
Mindanao	IX – Zamboanga Peninsula X – Northern Mindanao XI – Davao Region XII – Soccsksargen XIII – Caraga Region BARMM – Bangsamoro Autonomous Region in Muslim Mindanao
Former regions	ARMM – Autonomous Region in Muslim Mindanao NIR – Negros Island Region IV – Southern Tagalog