South Sulawesi, propinsi (or provinsi; province), central and southwestern Celebes (Sulawesi), Indonesia. It is bounded by the provinces of Central Sulawesi (Sulawesi Tengah) to the north, Southeast Sulawesi (Sulawesi Tenggara) to the northeast, as well as by the Gulf of Bone to the east, the Flores Sea to the south, the Makassar Strait to the ...