Negros Occidental, officially the Province of Negros Occidental (Hiligaynon: Kapuoran sang Nakatungdang Negros (Negros Occidental; Tagalog: Lalawigan ng Kanlurang Negros, is a province in the Philippines located in the Western Visayas region. Its capital is the city of Bacolod, of which it is geographically situated and grouped under by the Philippine Statistics Authority, but remains politically independent from the provincial government. It occupies the northwestern half of the large island of Negros, and borders Negros Oriental, which comprises the southeastern half. Known as the "Sugarbowl of the Philippines", Negros Occidental produces more than half the nation's sugar output.

Western Visayas is an administrative region in the Philippines, numerically designated as Region VI. It consists of six provinces and two highly urbanized cities. The regional center is Iloilo City. The region is dominated by the native speakers of four Visayan languages: Hiligaynon, Kinaray-a, Aklanon and Capiznon. The land area of the region is 20,794.18 km2 (8,028.68 sq mi), and with a population of 7,954,723 inhabitants, it is the second most populous region in the Visayas after Central Visayas.