| Official Name: | South Ogan Komering Ulu Regency |
| Native Name: | (Kabupaten Ogan Komering Ulu Selatan) |
| Native Name Lang: | id |
| Type: | Regency |
| Motto: | Serasan Seandanan |
| Subdivision Type: | Country |
| Subdivision Name: | Indonesia |
| Subdivision Type1: | Province |
| Subdivision Name1: | South Sumatra |
| Seat Type: | Regency seat |
| Seat: | Muaradua |
| Area Total Km2: | 5493.94 |
| Population As Of: | mid 2023 estimate |
| Population Total: | 407676 |
| Population Density Km2: | auto |
| Population Footnotes: | [1] |
| Timezone1: | WIB |
| Utc Offset1: | +7 |
South Ogan Komering Ulu Regency (Kabupaten Ogan Komering Ulu Selatan) is an inland regency in the far south of South Sumatra Province, Indonesia. It was created on 18 December 2003 from what had previously been the southernmost districts of Ogan Komering Ulu Regency. It covers an area of 5,493.94 km2, and had a population of 318,428 at the 2010 Census[2] and 408,981 at the 2020 Census;[3] the official estimate as at mid 2023 was 407,676 (comprising 211,650 males and 196,026 females).[4] The administrative centre is the town of Muaradua[5] (not to be confused with Muara Dua District in Lhokseumawe City, Aceh Province). It borders Ogan Komering Ulu Regency, East Ogan Komering Ulu Regency and Muara Enim Regency to the north.[5] It also borders Lampung Province to the south and east and Bengkulu Province to the west.
The Regency is administratively composed of nineteen districts (kecamatan). Their areas (in km2) and their populations at the 2010 Census[6] and 2020 Census[7] are tabulated below. The table also includes the locations of the district administrative centres, the number of administrative villages in each district (totaling 252 rural desa and 7 urban kelurahan - the latter including 5 in Muaradua District, plus the administrative centres of Banding Agung and Central BPR Ranau Districts), and its post code.
| Kode Wilayah | Name of District (kecamatan) | Area in km2 | Pop'n Census 2010 | Pop'n Census 2020 | Admin centre | No. of villages | Post code | |
|---|---|---|---|---|---|---|---|---|
| 16.09.08 | Mekakau Ilir | 261.15 | 17,824 | 23,917 | Tanjung Besar | 15 | 32276 | |
| 16.09.03 | Banding Agung | 276.38 | 18,710 | 25,955 | Bandar Agung Ranau | 22 | 32274 | |
| 16.09.13 | Warkuk Ranau Selatan (South Warkuk Ranau) | 239.48 | 20,486 | 25,032 | Kota Baru | 16 | 32275 | |
| 16.09.12 | Buay Pematang Ribu Ranau Tengah (Central BPR Ranau) | 353.20 | 19,393 | 25,972 | Simpang Sender | 22 | 32268 | |
| 16.09.09 | Buay Pemaca | 714.52 | 37,768 | 44,880 | Kota Way | 22 | 32265 | |
| 16.09.05 | Simpang | 342.29 | 13,241 | 18,086 | Simpang Agung | 7 | 32263 | |
| 16.09.17 | Buana Pemaca | 190.10 | 12,117 | 15,907 | Jagaraga | 8 | 32264 | |
| 16.09.01 | Muaradua | 261.95 | 39,533 | 50,076 | Pasar Muaradua | 14 | 32212 | |
| 16.09.19 | Buay Rawan | 167.00 | 12,395 | 18,767 | Gunung Cahya | 11 | 32211 | |
| 16.09.06 | Buay Sandang Aji | 450.00 | 16,104 | 21,334 | Gunung Terang | 16 | 32277 | |
| 16.09.18 | Tiga Dihaji | 153.45 | 9,028 | 11,046 | Surabaya | 8 | 32262 | |
| 16.09.07 | Buay Runjung | 171.19 | 9,673 | 12,811 | Belambangan | 14 | 32278 | |
| 16.09.14 | Runjung Agung | 157.41 | 10,989 | 13,978 | Sura | 9 | 32270 | |
| 16.09.10 | Kisam Tinggi | 417.00 | 17,272 | 19,820 | Tenang | 19 | 32279 | |
| 16.09.04 | Muaradua Kisam | 219.80 | 16,583 | 20,144 | Muaradua Kisam | 18 | 32271 | |
| 16.09.11 | Kisam Ilir | 136.02 | 6,995 | 7,963 | Pulau Kemiling | 9 | 32272 | |
| 16.09.02 | Pulau Beringin | 476.51 | 22,484 | 30,375 | Pulau Beringin | 13 | 32273 | |
| 16.09.16 | Sindang Danau | 210.00 | 8,561 | 11,408 | Ulu Danau | 7 | 32266 | |
| 16.09.15 | Sungai Are (Are River) | 296.49 | 9,272 | 11,510 | Simpang Luas | 9 | 32267 | |
| Totals | 5,493.94 | 318,428 | 408,981 | Muaradua | 259 |