The Southeast Peninsula is a peninsula of Sulawesi (Celebes), lying between the Gulf of Tolo and the Gulf of Boni. It is mostly coterminous with the province of Southeast Sulawesi. The largest city on the peninsula is Kendari.
Several islands are situated off its south-eastern tip, including Muna and Buton.
Southeast Sulawesi (Indonesian: Sulawesi Tenggara, Indonesian pronunciation: [sulaˌwesi t̪əŋˈɡara]; often abbreviated to Sultra, Indonesian pronunciation: [ˈsʊlt̪ra]), is a province on the island of Sulawesi, forming the southeastern peninsula of that island, together with a number of substantial offshore islands such as Buton, Muna, Kabaena and Wawonii (formerly called Wowoni), together with many smaller islands. It is bordered by South Sulawesi and Central Sulawesi to the north, sharing a maritime border with Maluku and North Maluku to the east and East Nusa Tenggara to the south, as well a very narrow maritime border with East Timor to the south. The capital is the city of Kendari, on the east coast of the peninsula.
The province has no highway road connecting to the rest of the island, and the primary transportation link is a ferry across the Bone Gulf between Watampone (Bone) in South Sulawesi and the port of Kolaka in Southeast Sulawesi.
The Gulf of Boni (Indonesian: Teluk Bone), also known as the Gulf of Bone, Bay of Boni, and Bone Bay, is the gulf which divides the South and Southeast Peninsulas of the island of Sulawesi (Celebes) in Indonesia. It opens on the south into the Banda Sea.