Bayawan City is a city located in the southern tip of Negros Oriental, Philippines, around 101 kilometers from the provincial capital Dumaguete City and near the provincial border with Negros Occidental. It is a coastal city with a total land area of 699 km², the largest in the province. It has a population of 101,000 (est. 2004). Mabinay bound it to the north, Sta. Catalina to the east, Tanjay City to the southeast and Basay to the west and it also shares a boundary with Kabankalan City of Negros Occidental on the northwest.

Bayawan City has two distinct climate seasons: the dry season, well pronounced in the months of January to May; and the wet season, in the months of June to December. Typhoons intermittently occur between May to December.