Negros Oriental, officially the Province of Negros Oriental, is a province in the Philippines located in the Negros Island Region. Its capital is the city of Dumaguete, one of the two regional centers of Negros Island Region. It occupies the southeastern half of the large island of Negros, and borders Negros Occidental, which comprises the northwestern half. It also includes Apo Island, a popular dive site for both local and foreign tourists.