As an administrative region, it is officially named the Negros Island Region also abbreviated as NIR, the 18th and newest region of the Philippines, comprising the highly urbanized city of Bacolod and the provinces of Negros Occidental and Negros Oriental, along with its corresponding outlying islands and islets. It is located between the islands of Panay and Guimaras to the west and Cebu to the east, with Siquijor located on the toe of the island and the islands of Bantayan to the north. Politically and linguistically, Negros is divided into two provinces: Negros Occidental and Negros Oriental, together comprising the Negros Island Region.
- Negros Oriental
- Negros Occidental