First-order subdivisions

Anseba Region

Anseba Region (Zoba Anseba) is one of Eritrea's six administrative regions, in the central-northern part of the country, with its capital at Keren, about 91 km northwest of Asmara.

Antalya Province (Antalya ili) is Türkiye's fifth most populous province on the southwestern Mediterranean coast, capital Antalya (ancient Attaleia of Pamphylia), 20,815 km², 18 districts, tourism- and agriculture-based economy.

Antioquia Department

Antioquia is a Colombian department with capital Medellín, 125 municipalities in 9 subregions including coastal Urabá, the second-largest departmental GDP after Bogotá, and the 2024–2027 plan "Por Antioquia Firme" under Governor Andrés Julián Rendón.

Antique (province)

Antique is a seahorse-shaped Philippine province on Panay Island's western coast, Western Visayas, with 18 municipalities, 643,173 people (2024), capital San Jose, and a PhP 82.31 billion GDP in 2025.

Anzoátegui

Anzoátegui, a state of northeastern Venezuela with capital Barcelona, covers 43,300 km² across 21 municipalities. Named for independence hero José Antonio Anzoátegui, it is Venezuela's second-largest oil producer after Zulia.

Aomori Prefecture

Aomori Prefecture (青森県) is Japan's northernmost prefecture on Honshu, created in 1871 from Hirosaki Prefecture. Known for Tsugaru-Nanbu cultural divide, Japan's oldest pottery, and largest apple production.

Aosta Valley

Aosta Valley (Valle d'Aosta, Vallée d'Aoste) is Italy's smallest autonomous region, bilingual in French and Italian under its 1948 special Statute, with Francoprovençal and Walser German minorities, 122,532 residents, and an Alpine territory above 2,000 m average altitude.

Apulia

Apulia (Puglia), southern Italian region forming the boot's heel; capital Bari, about 3.87 million residents, six provinces, over 865 km of coastline, GDP per capita well below the national average.

Arabia Petraea

Arabia Petraea (Provincia Arabia), a Roman frontier province created by Trajan in 106 CE from the Nabataean kingdom, covering Jordan, the Sinai and northwest Arabia, with capital Bostra, later split into Palaestina Tertia and Arabia.

Arad

Arad is a county (județ) in western Romania on the Hungarian border, capital city Arad; 410,058 residents in 2026, Mureș River corridor, Codru-Moma mountains, large agriculture and rolling-stock industry.

Aragon

Aragon (Aragón) is an autonomous community of northeastern Spain with provinces Huesca, Teruel, and Zaragoza, capital Zaragoza. Former kingdom founded 1035; 47,720 km², 1.35 million people; PP–Vox government under Jorge Azcón after the 2026 elections.

Araucanía Region

Araucanía Region (Región de La Araucanía), Chile's ninth region, capital Temuco, provinces Cautín and Malleco, 32 communes; about 31,858 km², roughly 1.01 million people (2024 Census), Mapuche heartland with forestry, agriculture, tourism, and high rural poverty.

Argeş

Argeș (Județul Argeș) is a Romanian county in Muntenia, seat Pitești, named after the Argeș River. Area 6,826 km², population about 562,000 (2026); home of the Dacia plant at Mioveni and the medieval Wallachian capitals Curtea de Argeș and Câmpulung.

Arkhangelsk Oblast (Архангельская область)

Arkhangelsk Oblast (Архангельская область), a large northern Russian federal subject with center Arkhangelsk, includes the Nenets Autonomous Okrug, Franz Josef Land and Novaya Zemlya; 589.9 thousand km², 989.4 thousand people, shipbuilding and timber economy.

Oct 22, 2026

Armenian Oblast

The Armenian Oblast (Հայկական մարզ) was a province of the Russian Empire from 1828 to 1840, centered on Erivan and formed from the former Erivan and Nakhichevan khanates.

Artemisa

Artemisa, a province of western Cuba created January 1, 2011 from the former La Habana province; capital Artemisa city; 11 municipalities, about 502,392 inhabitants, 4,004.27 km²; agriculture, Mariel port, Sierra del Rosario Biosphere Reserve, Soroa and Las Terrazas.

Arunachal Pradesh (अरुणाचल प्रदेश)

Arunachal Pradesh (अरुणाचल प्रदेश), the Land of the Dawn-lit Mountains, is India's northeasternmost state, capital Itanagar, 83,743 km², statehood 20 February 1987 as the 24th state, formerly NEFA.

Arusha Region

Arusha Region (Mkoa wa Arusha), northeastern Tanzania, capital Arusha city under Mount Meru; 2,356,255 people (2022 census), 37,576 km², one city and six districts, tourism hub drawing over 80 percent of Tanzania's visitors.

Aswan Governorate

Aswan Governorate (محافظة أسوان), Egypt's southernmost governorate on the Nile bordering Sudan, contains the Aswan High Dam, Lake Nasser, the Nubian Monuments World Heritage site, Benban solar complex, and gold mines.

Asyut Governorate

Asyut Governorate (محافظة أسيوط), Upper Egypt governorate on the Nile with capital Asyut; area 25,926 km², 5.25 million people (2025), cement and food industries, Asyut University, high poverty rate.

Atakora Department

Atakora Department (Département de l'Atacora) is a northwestern department of Benin, ISO code BJ-AK, one of six original departments split in 1999 to create Donga; nine communes, Atacora mountain chain, UN-projected 2025 population 1,151,782.

Atlantique Department

Atlantique, a department of southern Benin (French: Département de l'Atlantique), capital Allada; 3,233 km², eight communes including Abomey-Calavi and Ouidah; 1,398,229 inhabitants at the 2013 census, the most populous department.

Attica (Αττική) (region)

Attica (Αττική) is Greece's most populous administrative region, 3,814,064 residents in 2021, covering the Athens peninsula, Troizinia, Saronic Gulf islands, and Kythera; eight regional units, seat Athens, over 40% of national GDP.

Aurora (province)

Aurora is a coastal province of Central Luzon, Philippines, capital Baler, with 8 municipalities, 151 barangays, and 240,824 residents (2024). Independent from Quezon since August 13, 1979; mountainous, typhoon-prone Pacific-facing province.

Autonomous communities of Spain

Autonomous communities (comunidades autónomas) are Spain's 17 first-level self-governing regions, plus Ceuta and Melilla, created by the 1978 Constitution in a quasi-federal, asymmetric system with devolved health, education and financing powers.

Autonomous Republic of Crimea (Автономна Республіка Крим)

Autonomous Republic of Crimea (Автономна Республіка Крим), Ukraine's autonomous republic, temporarily occupied and annexed by Russia in 2014; UN resolution 68/262 affirmed Ukrainian sovereignty, and EU sanctions remain in force.

Aveiro District

Aveiro District (Distrito de Aveiro), a mainland Portuguese district with INE code 01: 19 municipalities, 174 parishes, 2,800.94 km², 700,787 residents (2021), capital Aveiro, bordering Porto, Viseu, and Coimbra.

Awdal

Awdal (Somali: Awdal, Arabic: أودَل) is the westernmost region of Somaliland, capital Borama, four districts (Zeylac, Lughaye, Baki, Borama), population about 661,373, under Somaliland administration with Gadabursi-led separatist currents.

Aydın Province

Aydın Province (Aydın ili), Aegean Turkey: 17 districts, 1,165,943 people (2024), 8,116 km² on the Büyük Menderes Graben; agriculture (figs, olives, cotton) and coastal tourism at Kuşadası and Didim.