Southeast Asian first-level subdivisions

Provinsi Sulawesi Selatan

Provinsi Sulawesi Selatan (South Sulawesi Province), Indonesian province on southern Sulawesi, capital Makassar; 21 regencies, 3 cities; 9.07 million people (2020); economy grew 5.43% in 2025, TFR 2.17, HDI 75.92.

Provinsi Sumatera Barat

Provinsi Sumatera Barat (West Sumatra), Indonesian province on western Sumatra, capital Padang, homeland of the Minangkabau; 5.92 million people, nagari-based local government, high seismic risk from the Sunda megathrust and Sumatran fault.

Pursat

Pursat (ពោធិ៍សាត់) is Cambodia's fourth largest province, 12,692 km², on the Tonle Sap and Cardamom Mountains; capital Pursat town, known for marble carving, Kampong Luong floating village, and agriculture.

Quezon

Quezon is a first-class province in CALABARZON, Philippines, formerly Tayabas, renamed by RA 14 in 1946 for President Manuel L. Quezon. Capital Lucena City; largest coconut producer; 2.26 million people (2024).

Riau

Riau (Riau Province, Provinsi Riau) is an Indonesian province on central-eastern Sumatra, capital Pekanbaru, established 9 August 1957, population about 6.9 million, a major oil, gas, and palm oil economy distinct from Riau Islands province.

Riau Islands

Riau Islands (Kepulauan Riau, Kepri), Indonesian province of over 2,000 islands between Sumatra and Singapore, split from Riau in 2002; capital Tanjungpinang, economic center Batam free trade zone.

Rizal

Province of Rizal (Lalawigan ng Rizal), a Philippine province east of Metro Manila created June 11, 1901 from Manila Province and Morong district; dismembered 1975; now Antipolo city plus 13 municipalities, 3.4 million people.

Sabah

Sabah (Malaysia's second largest state, 72,500 sq km on northern Borneo, "Land Below the Wind"): population 3.42 million (2020), GDP RM88.8 billion (2025), joined Malaysia 16 September 1963, capital Kota Kinabalu, GRS-led government after the 2025 election.

Sagaing Region

Sagaing Region, northwestern Myanmar's largest region (94,621 km², capital Sagaing city), agricultural and mining area with the Naga Self-Administered Zone; since 2021 the epicenter of civil war resistance and the country's highest displacement.

Salavan

Salavan (ສາລະວັນ, Saravane) is a southern Lao province on the Bolaven Plateau, capital Salavan city, 8 districts, a major Arabica coffee producer, Ho Chi Minh Trail wartime history, and UXO contamination.

Samar (province)

Samar (formerly Western Samar) is a province in Eastern Visayas, Philippines, capital Catbalogan City, created by RA 4221 in 1965; about 6,048 sq km, 793,183 people (2020), two cities, 24 municipalities.

Sarawak

Sarawak, Malaysia's largest state (124,449.51 sq km) on northwest Borneo, joined Malaysia on 16 September 1963 under MA63 with an 18-point agreement; capital Kuching, population 2,453,677 (2020).

Selangor

Selangor (Selangor Darul Ehsan), Malaysia's most populous state on the west coast of Peninsular Malaysia; capital Shah Alam, royal town Klang; largest state GDP contributor, 6.3% growth in 2025, nine districts.

Soccsksargen

Soccsksargen (Region XII) is a Philippine administrative region in south-central Mindanao comprising South Cotabato, Cotabato, Sultan Kudarat, Sarangani, and General Santos City, with 4.46 million people (2024), an agro-based economy of PhP 550.08 billion, and Koronadal City as regional center.

South Papua

South Papua (Papua Selatan) is an Indonesian province created by Law 14/2022 from Papua's southern regencies Merauke, Boven Digoel, Mappi, and Asmat, capital Merauke, special autonomy status, Anim Ha customary region bordering Papua New Guinea.

Southeast Sulawesi

Southeast Sulawesi (Sulawesi Tenggara, Sultra) is an Indonesian province on Sulawesi's southeastern peninsula, capital Kendari, established 1964. About 2.79 million people (2024); nickel mining, fisheries, and Wakatobi coral reefs dominate its economy.

Southwest Papua

Southwest Papua (Papua Barat Daya), Indonesia's 38th province, created by Law No. 29 of 2022 from West Papua; capital Sorong; six regencies/city; Raja Ampat UNESCO Geopark; population about 637,000 (2025).

Oct 22, 2026

Special Region of Yogyakarta

The Special Region of Yogyakarta (Daerah Istimewa Yogyakarta, DIY) is a special-status province of Indonesia, formed when the Yogyakarta Sultanate and Paku Alaman principality joined the republic in 1945.

Oct 22, 2026

State of Pasundan

The State of Pasundan (Negara Pasundan) was a federal state in West Java, established by the Dutch in 1948 during the Indonesian National Revolution and dissolved in 1950 into the Republic of Indonesia.

State of Singapore (Malaysia)

State of Singapore (Malaysia): Singapore's status as a Malaysian state from 16 September 1963 to 9 August 1965, under the 1963 State Constitution, with reserved federal powers, 15 of 127 federal seats, ending in the 7 August 1965 separation agreement.

Sulawesi Tengah

Sulawesi Tengah (Central Sulawesi) is an Indonesian province on central Sulawesi Island, capital Palu, area 61,841.29 km2, 13 regencies plus 1 city, about 3.19 million people, defined by the Palu-Koro Fault and the 2018 Mw 7.5 earthquake, tsunami, and liquefaction.

Sulawesi Utara

Sulawesi Utara (North Sulawesi) is an Indonesian province at the northern tip of Sulawesi, capital Manado; 2.68 million people (2025 census), 11 regencies and 4 cities, established 23 September 1964, lowest poverty rate in Sulawesi.

Sulu

Province of Sulu (Luwa' Sug), Philippine island province in the Sulu Archipelago, capital Jolo, 19 municipalities, 2024 population 1,146,097; historic seat of the Sultanate of Sulu; excluded from BARMM by 2024 Supreme Court ruling and transferred to Region IX by EO 91 in 2025.

Sumatera Selatan

Sumatera Selatan (South Sumatra) is a province of Indonesia occupying southern Sumatra island, with Palembang on the Musi River as its capital; it was the center of the Srivijaya kingdom.

Svay Rieng

Svay Rieng (ស្វាយរៀង) is a province of far south-east Cambodia, bordered by Vietnam on three sides in the Parrot's Beak salient; it was created in 1922.

Takeo

Takeo (តាកែវ, ខេត្តតាកែវ) is a southern Cambodian province, code 21, capital Doun Kaev, bordering Vietnam. Known as the cradle of Khmer civilization for Funan-era Angkor Borei and Phnom Da.

Tarlac

Tarlac is a landlocked province in Central Luzon, Philippines, with capital Tarlac City, 17 municipalities, 511 barangays, and 1,568,162 people (2024). Its economy grew 7.6 percent in 2024 and is Services-based.

Tây Ninh province

Tây Ninh province (tỉnh Tây Ninh), a Vietnamese border province in the Southeast region; merged with Long An in June 2025 into a new Tây Ninh of 8,536.44 km², 3,254,170 people, centered in Tân An city, with a 240 km Cambodian border.

Tboung Khmum

Tboung Khmum (ត្បូងឃ្មុំ), a Cambodian province created 31 December 2013 from eastern Kampong Cham by royal decree, capital Suong, area 5,250.51 km², population 763,735 (2019), agriculture-based economy.