| Official Name: | Lembata Regency |
| Native Name: | Kabupaten Lembata |
| Settlement Type: | Regency |
| Pushpin Map: | Indonesia_Lesser Sunda Islands#Indonesia |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location in Lesser Sunda Islands and Indonesia |
| Subdivision Type: | Country |
| Subdivision Name: |  Indonesia |
| Subdivision Type1: | Province |
| Seat Type: | Capital |
| Seat: | Lewoleba |
| Leader Title: | Regent |
| Leader Name: | Marsianus Jawa |
| Leader Title1: | Vice Regent |
| Leader Name1: | - |
| Unit Pref: | Imperial |
| Area Total Km2: | 1266.39 |
| Population As Of: | mid 2023 estimate |
| Population Footnotes: | [1] |
| Population Total: | 137812 |
| Population Density Km2: | auto |
| Coordinates: | -8.433°N 123.467°W |
| Area Code Type: | Area code |
| Area Code: | (+62) 383 |
Lembata Regency is a regency in East Nusa Tenggara province of Indonesia.[2] Established on 4 October 1999 (under administrative Law UU 52/1999) from the most easterly part of East Flores Regency, the regency covers the island of Lembata (formerly known as Lomblen), together with three small offshore islands together forming the eastern part of the Solor Archipelago, and has its administrative seat (capital) in Lewoleba. The population of the Regency was 117,829 at the 2010 decennial census[3] and at the 2020 census was 135,930;[4] the official estimate as at mid 2023 was 137,812.[5]
The regency is divided into nine districts (kecamatan), tabulated below with their areas and their populations at the 2010 census[6] and 2020 census,[7] together with the official estimates as at mid 2023.[8] The table also includes the location of the district headquarters, the number of administrative villages in each district (totaling 144 rural desa and 7 urban kelurahan - the latter all in Nubatukan District), and its post code.
| Kode Wilayah | Name of District (kecamatan) | Location | Area in km2 | Pop'n census 2010 | Pop'n census 2020 | Pop'n estimate mid 2023 | Admin centre | No. of villages | Post codes | |
|---|---|---|---|---|---|---|---|---|---|---|
| 53.13.01 | Nagawutung (a) [9] | (Southwest Lembata) | 185.41 | 8,735 | 10,120 | 10,196 | Loang | 18 | 86684 | |
| 53.13.02 | Atadei [10] | (Southeast Lembata) | 142.99 | 7,537 | 7,700 | 7,739 | Kalikasa | 15 | 86685 | |
| 53.13.03 | Ile Ape [11] | (Northwest Lembata) | 91.86 | 11,499 | 13,150 | 13,769 | Waipukang | 17 | 86683 | |
| 53.13.04 | Lebatukan [12] | (Central Lembata) | 272.08 | 8,550 | 9,770 | 10,208 | Hadakewa | 17 | 86681 | |
| 53.13.05 | Nubatukan (c) [13] | (West Lembata) | 181.78 | 33,236 | 40,200 | 36,772 | Lewoleba | 18 | (d) | |
| 53.13.06 | Omesuri [14] | (East Lembata) | 184.80 | 15,919 | 18,830 | 21,502 | Balauring | 22 | 86691 | |
| 53.13.07 | Buyasuri [15] | (Far East Lembata) | 121.49 | 18,879 | 21,270 | 23,003 | Wairiang | 20 | 86692 | |
| 53.13.08 | Wulandoni (b) [16] | (South Lembata) | 125.87 | 8,375 | 9,020 | 9,139 | Wulandoni | 15 | 86686 | |
| 53.13.09 | Ile Ape Timur [17] | (East Ile Ape) | 48.98 | 5,099 | 5,880 | 5,484 | Lamaau | 9 | 86687 | |
| Total island | 1,355.26 | 117,829 | 135,930 | 137,812 | Lewoleba | 151 |
Notes: (a) includes offshore island of Pulau Sewanggi. (b) includes offshore islands of Batutara and Watonubi. (c) includes regency capital of Lewoleba town.
(d) of the seven kelurahan, Lewoleba has a postcode of 86611, Lewoleba Utara of 86612, Lewoleba Barat of 86613, Lewoleba Tengah of 86615, Lewoleba Timur (and the desa of Lite Ulu Mado) of 86616, while Lewoleba Selatan and Selandoro, together with the remaining ten desa, share the postcode of 86682.
Nagawutung District comprises the 18 desa of Atawai, Babokerong, Baobolak, Belabaja, Boli Bean, Duawutun, Idalolong, Ile Boli, Labalimut, Liwulagang, Lolong, Lusiduawutun, Pasir Putih, Penikene, Ria Bao, Tewaowutung, Warawatung and Wuakerong.
Atadei District comprises the 15 desa of Atakore, Dori Pewut, Dulir, Ile Kerbau, Ile Kimok, Katakeja, Nubaboli, Lebaata, Lerek, Lusilame, Nogo Doni, Nuba Atalojo, Nubahaeraka, Tubuk Rajan and Lewogroma.
Ile Ape District comprises the 17 desa of Amakaka, Beutaran, Bungamuda, Dulitukan, Kolipadan, Kolontobo, Lamawara, Laranwuntun, Muruona, Napasabok, Petuntawa, Plilolon, Riangbao, Tagawiti, Tanjung Batu, Waowala and Watodiri.
Lebatukan District comprises the 17 desa of Atakowa, Baopana, Balurebong, Banitobo, Dikesare, Hadakewa, Lamadale, Lamalela, Lamatuka, Lerahinga, Lewoeleng, Lodotodokowa, Merdeka, Seranggorang, Tapobaran, Tapolangu and Waienga.
Nubatukan District comprises the 7 kelurahan of Lewoleba, Lewoleba Barat, Lewoleba Selatan, Lewoleba Tengah, Lewoleba Timur, Lewoleba Utara and Selandoro, plus the 11 desa of Bakalerek, Baolangu, Belobatang, Bour, Lite Ulumado, Nuba Mado, Pada, Paubokol, Udak Melomata, Waijarang and Watokobu.
Omesuri District comprises the 22 desa of Aramengi, Balauring, Dolulolong, Hingalamamengi, Hoelea, Hoelea II, Lebewala, Leubatang, Leudanung, Leuwayang, Mahal, Mahal II, Meluwiting, Meluwiting I, Nilanapo, Normal, Normal I, Peusawah, Roma, Wailolong, Walangsawah and Wowong.
Buyasuri District comprises the 20 desa of Atu Wa'lupang, Atulaleng, Bareng, Bean, Benihading I, Benihading II, Buriwutung, Kalikur, Kalikur WL, Kaohua, Leuburi, Leuwohung, Loyobohor, Mampir, Panama, Roho, Rumang, Tobotani, Tubung Walang and Umaleu.
Wulandoni District comprises the 15 desa of Alap Atadei, Atakera, Ataili, Belobao, Imulolong, Lamalera A, Lamalera B, Lelata, Leworaja, Pantai Harapan, Puor, Puor B, Posiwatu, Tapobali and Wulandoni.
Ile Ape Timur District comprises the 9 desa of Aulesa, Bao Lai Duli, Jontona, Lamaau, Lamagute, Lamatokan, Lamawolo, Todanara and Waimatan.
Mount Ile Lewotolok, an active volcano, is located in the north central part of Lembata Island. In November 2020, it erupted, leading to the evacuation of over 4,000 people from areas close to the volcano.[18]