The legislative districts of Zambales are the representations of the province of Zambales and the highly urbanized city of Olongapo in the various national legislatures of the Philippines. The province and the city are currently represented in the lower house of the Congress of the Philippines through their first and second congressional districts.

Zambales, officially the Province of Zambales, is a province in the Philippines located in the Central Luzon region. Its capital is Iba, which is located in the middle of the province. Zambales borders Pangasinan to the north and northeast, Tarlac to the east, Pampanga to the southeast, Bataan to the south and the South China Sea to the west. With a total land area of 3,830.83 square kilometres (1,479.09 sq mi), Zambales is the second largest among the seven provinces of Central Luzon after Nueva Ecija. The province is noted for its mangoes, which are abundant from January to April.