Batac, officially the City of Batac, is a 5th class component city in the province of Ilocos Norte, Philippines. According to the 2020 census, it has a population of 55,484 people.

A city is one of the units of local government in the Philippines. All Philippine cities are chartered cities, whose existence as corporate and administrative entities is governed by their own specific municipal charters in addition to the Local Government Code of 1991, which specifies their administrative structure and powers. As of July 8, 2023, there are 149 cities.