Southwest Aceh Regency Kabupaten Aceh Barat Daya
Regency
Coat of arms
Motto(s):  Sapeu Kheun Sahoe Langkah (Same Word Same Step)
Location within Aceh
Southwest Aceh Regency Location in Aceh, Northern Sumatra, Sumatra and Indonesia Show map of Aceh Southwest Aceh Regency Southwest Aceh Regency (Northern Sumatra) Show map of Northern Sumatra Southwest Aceh Regency Southwest Aceh Regency (Sumatra) Show map of Sumatra Southwest Aceh Regency Southwest Aceh Regency (Indonesia) Show map of Indonesia
Coordinates: 3°47′28″N 96°55′00″E / 3.7911°N 96.9166°E / 3.7911; 96.9166
Country	Indonesia
Region	Sumatra
Province	Aceh
Established	2002
Regency seat	Blangpidie
Government
• Regent	Darmansah
• Vice Regent	Vacant
Area
• Total	1,490.60 km2 (575.52 sq mi)
Population  (mid 2022 estimate)[1]
• Total	155,046
• Density	100/km2 (270/sq mi)
Time zone	UTC+7 (IWST)
Area code	(+62) 659
Website	acehbaratdayakab.go.id

Southwest Aceh Regency (Indonesian: Kabupaten Aceh Barat Daya) is a regency in the Aceh Province of Indonesia. The regency was created on 10 April 2002 from the northwestern districts of South Aceh Regency. It is located on the west side of the island of Sumatra. The regency covers an area of 1,882.99 square kilometres and according to the 2010 census had a population of 126,036;^[2] this rose to 140,366 at the 2015 Census, and to 150,775 at the 2020 Census;^[3] the official estimate as at mid 2022 was 155,046.^[1] The seat of the regency government is at Blangpidie.

Administrative districts

The regency is divided administratively into nine districts (kecamatan), tabulated below with their areas (in km²) and their populations at the 2010 Census^[2] and the 2020 Census,^[3] together with the official estimates as at mid 2022.^[1] The table also includes the locations of the district administrative centres, the number of villages (gampong) in each district, and its postal codes.