Nagan Raya Regency (Indonesian: Kabupaten Nagan Raya) is a regency in the Aceh special region of Indonesia. It is located on the island of Sumatra, and was formed on 10 April 2002 from districts formerly part of West Aceh Regency. The seat of the regency government is at Suka Makmue. The regency covers an area of 3,544.9 square kilometres and had a population of 139,663 people according to the 2010 Census and 168,392 at the 2020 Census. The official estimate as at mid 2023 was 176,461 (comprising 88,872 males and 87,589 females).

As at 2010, the regency was divided administratively into eight districts (kecamatan); however in 2011 two additional districts were created - Tripa Makmur (by division from Darul Makmur District) and Beutong Ateuh Banggalang (by division from Beutong District). Their areas (in km) and their populations at the 2010 Census and 2020 Census, together with the official estimates as at mid 2023, are listed below. The table also includes the locations of the district administrative centres, the number of villages (gampong) in each district, and its postal codes.

Kode Wilayah	Name of District (kecamatan)	Area in km	Pop'n Census 2010	Pop'n Census 2020	Pop'n Estimate mid 2023	Admin centre	No. of villages	Post codes
11.15.05	Darul Makmur	1,027.93	46,954	49,412	51,655	Alue Bilie	40	23662
11.15.09	Tripa Makmur	189.413		9,038	9,695	Kabu	11	23663
11.15.01	Kuala	120.89	18,540	22,350	23,237	Ujong Fatihah	17	23661
11.15.07	Kuala Pesisir (Coastal Kuala)	76.34	14,110	17,338	18,251	Padang Rubek	16	23660
11.15.08	Tadu Raya	347.19	11,185	14,731	15,592	Alue Bata	22	23664
11.15.04	Beutong	1,017.32	14,228	13,701	14,340	Keude Seumot	24	23672
11.15.10	Beutong Ateuh Banggalang	405.92		1,990	2,112	Kuta Teungoh	4	23673
11.15.02	Seunagan	56.73	14,464	15,924	16,449	Jeuram	35	23671
11.15.06	Suka Makmue	51.56	8,022	9,931	10,330	Lueng Baro	19	23674
11.15.03	Seunagan Timur (East Seunagan)	251.61	12,160	13,977	14,800	Keude Linteung	34	23670
	Totals	3,544.90	139,663	168,392	176,461	Suka Makmue	222

Notes: (a) included in 2010 figure for Darul Makmur District. (b) included in 2010 figure for Beutong District.

In 2012, Nagan Raya Regency has 24,698 hectares paddy fields with production of 164,586 tonnes of rice equivalent per year. Only a third of production is for regency's consumption and the rest is about 110,000 tonnes sold to other regencies and even to Medan, North Sumatra Province.

• List of regencies and cities of Indonesia

• Environmental Office website

4°10′N 96°30′E / 4.167°N 96.500°E / 4.167; 96.500