Delfin Albano is a 4th class municipality in the province of Isabela, Philippines. According to the 2015 census, it has a population of 26,614 people.

The municipality was formerly known as Magsaysay. It was named after the former congressman, Delfin Albano.

In 1957, the barrios of San Antonio, San Juan, Ragan Sur, Ragan Norte, Ragan Almacen, San Jose (Bulo), San Patricio, Quibal, San Andres (Lattu), Calinawan Sur, Bayabo, Santor, Sto. Rosario, Andarayan, Aneg, San Isidro, Mawi, San Roque, Carmencita, Aga, Villa Pareda, Villaluz, San Pedro, Concepcion, San Macario and San Nicolas and the sitios of Turod, Paco, Calamagui and Kim-malabasa, were separated from the municipality of Tumauini to form the town of Magsaysay.

The Municipality of Delfin Albano is located at 38 kilometres (24 mi) north-west of Ilagan City, the capital city of the Province of Isabela. The town is bounded on the north by the municipality of Santo Tomas, on the east by the Cagayan River, on the west by the municipalities of Quezon and Mallig, and on the south by the municipality of Quirino and the Ilagan and the Mallig River.

The Municipality of Delfin Albano occupies a total land area of 19,000 hectares, which is further subdivided among the 29 barangays. The total land area contains varied land use, which were developed in response to population and economic growth of the total land area, to wit: agriculture (59.04%), built-up areas (2.74%), forest (4.74%), open grass lands (30.15), and road and water bodies (3.33%).

Delfin Albano is politically subdivided into 29 barangays.

In the 2015 census, the population of Delfin Albano was 26,614 people, with a density of 140 inhabitants per square kilometre or 360 inhabitants per square mile.

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