La Union (Tagalog pronunciation: [lɐ ʔʊˈɲon]), officially the Province of La Union (Ilocano: Probinsia ti La Union; Pangasinan: Luyag/Probinsia na La Union; Tagalog: Lalawigan ng La Union), is a province in the Philippines located in the Ilocos Region in the island of Luzon. Its capital is the City of San Fernando, which also serves as the regional center of the Ilocos Region.