Quirino

Quirino, officially the Province of Quirino (; ), is a landlocked province in the Philippines located in the Cagayan Valley region in Luzon. Its capital is Cabarroguis while Diffun is the most populous in the province. It is named after Elpidio Quirino, the sixth President of the Philippines.

The province borders Aurora to the southeast, Nueva Vizcaya to the west, and Isabela to the north. Quirino used to be part of the province of Nueva Vizcaya, until it became a sub-province in 1966, then it was separated in 1972.

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