West Sulawesi is a province of Indonesia. It borders the provinces of South Sulawesi and Central Sulawesi to the east, Makassar Strait to the west, and the Pacific Ocean to the south. The province also shares maritime borders with East Kalimantan and South Kalimantan to the west and West Nusa Tenggara to the south. It is located on the western side of Sulawesi island. It covers a land area of 17,152.99 km2, and its capital is the town of Mamuju. The 2010 Census recorded a population of 1,158,651, while that in 2020 recorded 1,419,228; the official estimate as at mid 2023 was 1,481,077.

South Sulawesi is a province in the southern peninsula of Sulawesi, Indonesia. The Selayar Islands archipelago to the south of Sulawesi is also part of the province. The capital and largest city is Makassar. The province is bordered by Central Sulawesi and West Sulawesi to the north, the Gulf of Bone and Southeast Sulawesi to the east, Makassar Strait to the west, and Flores Sea to the south.