West Sumbawa Regency (Indonesian: Kabupaten Sumbawa Barat) is a Regency (Kabupaten) of the Indonesian Province of West Nusa Tenggara. It is located on the island of Sumbawa and has an area of 1,743.58 km. The regency was created on 18 December 2003 from what were at that time the westernmost five districts (kecamatan) of Sumbawa Regency. The population at the 2010 Census was 114,754, and at the 2020 Census was 145,798; the official estimate as at mid 2023 was 152,950 comprising 77,030 males and 75,920 females. The capital is the town of Taliwang.

Poto Tano, the most important harbour of West Sumbawa, is easily accessible by ferry from Lombok.

West Sumbawa Regency originally comprised five districts (kecamatan) formerly part of Sumbawa Regency, but now consists of eight districts, tabulated below with their areas and their populations at the 2010 Census and the 2020 Census, together with the official estimates as at mid 2023. The table also includes the locations of the district administrative centres, the number of administrative villages in each district (totaling 57 rural desa and 7 urban kelurahan - the latter all in Taliwang District), and its postal codes.

Kode Wilayah	Name of District (kecamatan)	Area in km	Pop'n 2010 Census	Pop'n 2020 Census	Pop'n mid 2023 Estimate	Admin centre	No. of villages	Post code(s)
52.07.04	Sekongkang	273.65	8,179	14,483	16,640	Sekongkang Bawah	7	84457
52.07.01	Jereweh	527.63	8,370	9,764	9,940	Beru	4	84456
52.07.08	Maluk	38.83	11,929	11,649	11,650	Benete	5	84459
52.07.02	Taliwang	153.71	44,136	57,610	57,540	Kuang	15	84452
52.07.07	Brang Ene	252.62	5,088	6,589	6,920	Manemeng	6	84455
52.07.05	Brang Rea	258.23	12,498	16,044	16,790	Tepas	9	84455- 84458
52.07.03	Seteluk	107.37	15,424	19,413	20,210	Seteluk Tengah	10	84457
52.07.06	Poto Tano	130.23	9,327	12,513	13,270	Senayan	8	84454
	Totals	1,743.58	114,754	145,798	152,950	Taliwang	64

Notes: (a) including the small islands of Pulau Baban and Pulau Rantung off the southwest coast of Sumbawa.
(b) including the small islands of Pulau Dua Ode, Pulau Dua Rea, Pulau Gera, Pulau Puyen, Pulau Sarang and Pulau Sesai off the west coast of Sumbawa.
(c) comprises 7 urban kelurahan (Arab Kenangan, Bugis, Dalam, Kuang, Menala, Sampir and Telaga Bertong) and 8 desa.
(d) including the islands of Pulau Belang, Pulau Kambing, Pulau Kenawa, Pulau Mandik1, Pulau Namo, Pulau Paserang and Pulau Ular off the northwest coast of Sumbawa.

• Official website

8°47′14.52″S 116°55′33.2″E / 8.7873667°S 116.925889°E / -8.7873667; 116.925889