| Official Name: | Banggai Sea Regency |
| Native Name: | Kabupaten Banggai Laut |
| Native Name Lang: | id |
| Settlement Type: | Regency |
| Pushpin Map: | Indonesia_Banggai#Indonesia_Sulawesi#Indonesia |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location in Banggai Islands, Sulawesi and Indonesia |
| Subdivision Type: | Country |
| Subdivision Name: | Indonesia |
| Subdivision Type1: | Province |
| Subdivision Name1: | Central Sulawesi |
| Seat Type: | Capital |
| Seat: | Banggai |
| Leader Title: | Regent |
| Leader Name: | Wenny Bukamo |
| Leader Title1: | Vice Regent |
| Leader Name1: | Tuty Hamid |
| Established Date: | 14 December 2012 |
| Unit Pref: | Imperial |
| Area Total Km2: | 725.67 |
| Population As Of: | mid 2023 estimate |
| Population Note: | [1] |
| Population Total: | 73100 |
| Population Density Km2: | auto |
| Timezone: | ICST |
| Utc Offset: | +8 |
| Coordinates: | -1.5888°N 123.5008°W |
| Area Code Type: | Area code |
| Area Code: | (+62) 461 |
Banggai Sea Regency (Indonesian: Kabupaten Banggai Laut, "Marine Banggai Regency") is a regency in the province of Central Sulawesi, Indonesia. The regency was established on 14 December 2012, partitioned from the Banggai Islands Regency.[2] It comprises the southern part of the Banggai Islands archipelago, including the main island of Banggai itself (including 40 offshore islets), the islands of Labobo and Bangkurung to the southwest of Banggai Island, and the numerous small Bokan Islands (Kepulauan Bokan) to the southeast; it does not include the larger island of Peleng to the north (between Banggai Island and the mainland of Sulawesi) which forms the Banggai Islands Regency. The new Banggai Sea Regency covers a land area of 725.67 km2 (and an associated marine area of 12,156.78 km2), and the districts now comprising the new Regency had a population of 62,183 at the 2010 Census[3] and 70,435 at the 2020 Census;[4] the official population estimate at mid-2023 was 73,100 (comprising 36,900 males and 36,200 females).[5]
The new Banggai Sea Regency is composed of seven districts (kecamatan), tabulated below with their areas and their 2010 Census[3] and 2020 Census populations,[4] together with the official estimates as at mid 2023.[6] The table also includes the location of the district headquarters, the number of administrative villages in each district (in total, 63 rural desa and 3 urban kelurahan), and its postal codes.
| Kode Wilayah | Name of District (kecamatan) | Area in km2 | Pop'n Census 2010 | Pop'n Census 2020 | Pop'n Estimate mid 2023 | Admin centre | No. of villages | Post codes | |
|---|---|---|---|---|---|---|---|---|---|
| 72.11.04 | Bangkurung (island) | 116.55 | 8,196 | 8,928 | 9,160 | Lantibung | 12 (a) | 94892 | |
| 72.11.05 | Labobo (island) (b) | 85.65 | 5,241 | 6,036 | 6,260 | Mansaleang | 8 | 94893 | |
| 72.11.02 | Banggai Utara (North Banggai) | 58.05 | 6,007 | 7,042 | 7,380 | Lokotoy | 6 | 94896 | |
| 72.11.01 | Banggai (district) (c) | 86.95 | 19,977 | 22,591 | 23,430 | Lompio | 10 | 94891 | |
| 72.11.07 | Banggai Tengah (Central Banggai) | 68.19 | 6,362 | 7,902 | 8,420 | Adean | 8 | 94895 | |
| 72.11.06 | Banggai Selatan (South Banggai) | 81.20 | 4,809 | 5,803 | 6,130 | Matanga | 6 | 94890 | |
| 72.11.03 | Bokan Kepulauan (d) (Bokan Islands) | 229.08 | 11,571 | 12,133 | 12,310 | Bungin | 16 | 94894 | |
| Totals | 725.67 | 62,163 | 70,435 | 73,100 | 66 |
Notes: (a) including three kelurahan - Dodung, Lompio, and Tano Bonunungan. (b) including 10 small offshore islands. (c) including 42 small offshore islands. (d) comprising 91 islands.
Banggai has a tropical rainforest climate (Af) with moderate rainfall from September to December and heavy to very heavy rainfall from January to August.