South Halmahera Regency (Indonesian: Kabupaten Halmahera Selatan) is a regency of North Maluku Province, Indonesia. It lies partly on Halmahera Island and partly on smaller islands to the west and south of Halmahera. It covers a land area of 8,779.320 km2, and at the 2010 Census it had a population of 198,911 people, while the 2020 Census showed that this had risen to 248,395 and the official estimate in mid 2021 was 251,690. The capital lies at the town of Labuha on Bacan Island.