Soppeng Regency is a landlocked regency in South Sulawesi province of Indonesia. Soppeng Regency has its seat of government (capital) in the town of Watansoppeng, located 180 km from Makassar. The regency covers an area of 1,385.55 km2, and had a population of 223,826 at the 2010 Census and 235,167 at the 2020 Census. The official estimate of population as of mid-2023 was 240,955.