How many countries are in Southeast Asia?

YearMaps maps 11 countries and territories in Southeast Asia: Indonesia, Philippines, Vietnam, Thailand, Myanmar, Malaysia, Cambodia, Laos, Singapore, Timor-Leste, Brunei. Definitions of Southeast Asia vary; this list follows a common convention.

What is the largest country in Southeast Asia?

Indonesia is the largest by area at 1.90M km². Indonesia has the largest population, about 285.72 million.

What is the largest city in Southeast Asia?

Manila is the largest city recorded for Southeast Asia, with a metropolitan population of about 11.10 million.

What is the highest mountain in Southeast Asia?

Hkakabo Razi is the highest summit recorded for Southeast Asia in YearMaps, at 5,881 m.

What is the largest lake in Southeast Asia?

Tonle Sap is the largest lake recorded in Southeast Asia, at about 2,547 km².

Map of Southeast Asia — Countries, Cities & Geography

Interactive Map of Southeast Asia

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About Southeast Asia

Southeast Asia is the geographical south-eastern subregion of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of mainland Australia, which is a part of Oceania. Southeast Asia is bordered to the north by East Asia, to the west by South Asia and the Bay of Bengal, to the east by Oceania and the Pacific Ocean, and to the south by Australia and the Indian Ocean. Apart from the British Indian Ocean Territory and two out of 26 atolls of the Maldives in South Asia, Maritime Southeast Asia is the only other subregion of Asia that lies partly within the Southern Hemisphere. Mainland Southeast Asia is entirely in the Northern Hemisphere. Timor-Leste and the southern portion of Indonesia are the parts of Southeast Asia that are located south of the equator.

The region lies near the intersection of geological plates, with both heavy seismic and volcanic activities. The Sunda plate is the main plate of the region, featuring almost all Southeast Asian countries except Myanmar, northern Thailand, northern Laos, northern Vietnam, and northern Luzon of the Philippines, while the Sunda plate only includes western Indonesia to as far east as the Indonesian province of Bali. The mountain ranges in Myanmar, Thailand, Peninsular Malaysia, and the Indonesian islands of Sumatra, Java, Bali, Lesser Sunda Islands, and Timor are part of the Alpide belt, while the islands of the Philippines and Indonesia as well as Timor-Leste are part of the Pacific Ring of Fire. Both seismic belts meet in Indonesia, causing the region to have relatively high occurrences of earthquakes and volcanic eruptions, particularly in the Philippines and Indonesia.

It covers about 4,500,000 km2 (1,700,000 sq mi), which is 9.80% of Asia, 8% of Eurasia and 3% of Earth's total land area. Its total population is about 676 million, about 8.5% of the world's population. It is the third most populous geographical region in Asia after South Asia and East Asia. The region is culturally and ethnically diverse, with hundreds of languages spoken by different ethnic groups.

Summary adapted from Wikipedia: Southeast Asia (CC BY-SA 4.0).

Visiting Southeast Asia

Southeast Asia is a group of diverse tropical countries between the Indian Ocean and the Pacific Ocean, featuring cultures influenced by both India and China and hosting large communities of Overseas Chinese. The region includes Indonesia, the most populous Muslim country in the world, as well as very prominent Buddhist countries, and quite significant Christian, Hindu and Animist communities. Southeast Asia has long been a favourite corner of the world for globe-tramping backpackers, known for its perfect beaches, tasty cuisine, low prices, and good flight connections.

Travel notes adapted from Wikivoyage: Southeast Asia (CC BY-SA 4.0).

Countries in Southeast Asia

Ranked by population. Each links to that country's own map.

Countries in Southeast Asia
#	Country	Population	Area	Capital
1	Indonesia	285.72 million	1.90M km²	Jakarta
2	Philippines	116.79 million	343,448 km²	Manila
3	Vietnam	101.60 million	331,690 km²	Hanoi
4	Thailand	71.62 million	513,120 km²	Bangkok
5	Myanmar	54.85 million	676,577 km²	Naypyidaw
6	Malaysia	35.98 million	330,803 km²	Kuala Lumpur
7	Cambodia	17.85 million	181,035 km²	Phnom Penh
8	Laos	7.87 million	236,800 km²	Vientiane
9	Singapore	6.11 million	719 km²	Singapore
10	Timor-Leste	1.42 million	14,919 km²	Dili
11	Brunei	466,330	5,765 km²	Bandar Seri Begawan

Largest Cities in Southeast Asia

Top 15 of 386 recorded. Ranked by metropolitan population. A port city's harbour is written up on the page of its sea.

Largest Cities in Southeast Asia
#	Name	Population	Region	Role
1	Manila	11.10 million	Metropolitan Manila	National capital
2	Jakarta	9.13 million	Jakarta Raya	National capital
3	Bangkok	6.70 million	Bangkok Metropolis	National capital
4	Ho Chi Minh City	5.31 million	H? Chí Minh city	Populated place
5	Singapore	5.18 million	—	National capital
6	Hanoi	4.38 million	Thái Nguyên	National capital
7	Rangoon	4.09 million	Yangon	National capital
8	Surabaya	2.85 million	Jawa Timur	Populated place
9	Quezon City	2.76 million	Metropolitan Manila	Populated place
10	George Town	2.50 million	Pulau Pinang	Admin-1 capital
11	Bandung	2.39 million	Jawa Barat	Admin-1 capital
12	Bekasi	2.38 million	Jakarta Raya	Populated place
13	Medan	2.12 million	Sumatera Utara	Admin-1 capital
14	Haiphong	1.97 million	Qu?ng Ninh	Populated place
15	Palembang	1.75 million	Sumatera Selatan	Admin-1 capital

Highest Mountains in Southeast Asia

Top 15 of 42 recorded. Ranked by summit elevation above sea level. A summit on a border is listed under both countries.

Highest Mountains in Southeast Asia
#	Name	Elevation	Feet	Region
1	Hkakabo Razi	5,881 m	19,295 ft	Asia
2	Puncak Jaya	4,884 m	16,024 ft	Oceania
3	Gunung Kinabalu	4,101 m	13,455 ft	Asia
4	Saramati	3,826 m	12,552 ft	Asia
5	Gunung Kerinci	3,805 m	12,484 ft	Asia
6	Gunung Rinjani	3,726 m	12,224 ft	Asia
7	Gunung Semeru	3,676 m	12,060 ft	Asia
8	Bulu Rantekombola	3,455 m	11,335 ft	Asia
9	Fan Si Pan	3,142 m	10,308 ft	Asia
10	Gunung Ciremay	3,077 m	10,095 ft	Asia
11	Mount Victoria	3,053 m	10,016 ft	Asia
12	Fuyul Sojol	3,030 m	9,941 ft	Asia
13	Gunung Binaiya	3,027 m	9,931 ft	Oceania
14	Longnawan	2,988 m	9,803 ft	Asia
15	Tata Mailau	2,986 m	9,797 ft	Asia

Largest Lakes in Southeast Asia

Top 10 of 10 recorded. Ranked by mapped surface area. A lake on a border is listed under each country it lies in, with the area of the whole lake.

Largest Lakes in Southeast Asia
#	Name	Surface Area	Type
1	Tonle Sap	2,547 km²	Lake
2	Danau Toba	1,149 km²	Lake
3	Laguna de Bay	912 km²	Lake
4	Nam Ngum Reservoir	518 km²	Reservoir
5	Chao Nen Dam	506 km²	Reservoir
6	Siri Kit Dam	270 km²	Reservoir
7	Kenohan Jempang	216 km²	Lake
8	Ubolratna Reservoir	209 km²	Reservoir
9	Bhumphol K. K. Nam	124 km²	Reservoir
10	Lake Taal	121 km²	Lake

Ports in Southeast Asia

Top 15 of 247 recorded. Ranked by approach channel depth, the figure that limits which ships can call. Harbours link to their write-up on the page of the sea or coast they lie on.

Ports in Southeast Asia
#	Name	Channel Depth	Class	Sea	Max Vessel
1	Masao	56.7 m	Very Small	Philippine, Sulu & Celebes Seas	medium vessels
2	Kantang Harbor	56.7 m	Very Small	Strait of Malacca & Singapore	medium vessels
3	Dabo	56.7 m	Very Small	South China Sea & Gulf of Thailand	medium vessels
4	Labuhanhaji	56.7 m	Very Small	Java Sea & Indonesian Archipelago	point_of_interest
5	Namlea	56.7 m	Very Small	Java Sea & Indonesian Archipelago	point_of_interest
6	Fakfak	56.7 m	Very Small	Java Sea & Indonesian Archipelago	medium vessels
7	Sorsogon	56.7 m	Very Small	Philippine, Sulu & Celebes Seas	point_of_interest
8	Hinatuan	56.7 m	Very Small	Philippine, Sulu & Celebes Seas	point_of_interest
9	Moulmein Harbor	56.7 m	Small	Arabian Sea & Bay of Bengal	medium vessels
10	Bengkulu	56.7 m	Very Small	Java Sea & Indonesian Archipelago	medium vessels
11	Cirebon	56.7 m	Very Small	Java Sea & Indonesian Archipelago	medium vessels
12	Tegal	56.7 m	Very Small	Java Sea & Indonesian Archipelago	medium vessels
13	Tanjungpinang	56.7 m	Very Small	South China Sea & Gulf of Thailand	medium vessels
14	Muar	56.7 m	Very Small	Strait of Malacca & Singapore	medium vessels
15	Pangkalpinang	56.7 m	Very Small	South China Sea & Gulf of Thailand	medium vessels

UNESCO World Heritage Sites in Southeast Asia

Top 15 of 48 recorded. Listed by year of inscription, earliest first. Sites shared with another country appear under each.

UNESCO World Heritage Sites in Southeast Asia
#	Name	Inscribed	Type	Criteria
1	Ayutthaya Historical Park	1991	Cultural	(iii)
2	Borobudur Temple Compounds	1991	Cultural	(i) (ii) (vi)
3	Historic Town of Sukhothai and Associated Historic Towns	1991	Cultural	(i) (iii)
4	Komodo National Park	1991	Natural	(vii) (x)
5	Prambanan Temple	1991	Cultural	(i) (iv)
6	Thungyai Naresuan Wildlife Sanctuary	1991	Natural	(vii) (ix) (x)
7	Ujung Kulon National Park	1991	Natural	(vii) (x)
8	Angkor	1992	Cultural	(i) (ii) (iii) (iv)
9	Ban Chiang	1992	Cultural	(iii)
10	Baroque Churches of the Philippines	1993	Cultural	(ii) (iv)
11	Tubbataha Reef	1993	Natural	(vii) (ix) (x)
12	Ha Long Bay	1994	Natural	(vii) (viii)
13	Luang Prabang	1995	Cultural	(ii) (iv) (v)
14	Rice Terraces of the Philippine Cordilleras	1995	Cultural	(iii) (iv) (v)
15	Sangiran	1996	Cultural	(iii) (vi)

Largest Islands of Southeast Asia

Top 15 of 55 recorded. Ranked by mapped area. An island divided between countries is listed under each, with the area of the whole island.

Largest Islands of Southeast Asia
#	Name	Area	Type
1	Malay Archipelago	3.91M km²	Island group
2	Greater Sunda Islands	969,929 km²	Island group
3	New Guinea	785,443 km²	Island
4	Borneo	733,858 km²	Island
5	Sumatra	430,052 km²	Island
6	Philippines	377,943 km²	Island group
7	Spratly Islands	188,559 km²	Island group
8	Sulawesi	170,803 km²	Island
9	Lesser Sunda Islands	152,621 km²	Island group
10	Moluccas	140,372 km²	Island group
11	Java	126,357 km²	Island
12	Luzon	105,881 km²	Island
13	Mindanao	94,557 km²	Island
14	Timor	28,881 km²	Island
15	Paracel Islands	21,227 km²	Island group

Mountain Ranges, Deserts and Landforms of Southeast Asia

Top 15 of 20 recorded. Ranked by mapped area. Covers mountain ranges, deserts, plateaus, named glaciers, plains, basins, peninsulas and capes. One that crosses a border is listed under every country it lies in, with the area of the whole feature.

Mountain Ranges, Deserts and Landforms of Southeast Asia
#	Name	Area	Type	Region
1	Asia	46.28M km²	Continent	Asia
2	Indochina Peninsula	1.90M km²	Pen/cape	Asia
3	New Guinea Highlands	222,321 km²	Range/mtn	Oceania
4	Malay Peninsula	214,867 km²	Pen/cape	Asia
5	Shan Plateau	183,978 km²	Plateau	Asia
6	Khorat Plat	155,104 km²	Plateau	Asia
7	Central Highlands	65,512 km²	Range/mtn	Asia
8	Barisan Mountains	63,657 km²	Range/mtn	Asia
9	Dângrêk Range	55,940 km²	Range/mtn	Asia
10	Naga Hills	47,332 km²	Range/mtn	Asia
11	Chin Hills	26,723 km²	Range/mtn	Asia
12	Himalayas	17,334 km²	Range/mtn	Asia
13	Isthmus of Kra	12,603 km²	Isthmus	Asia
14	Mekong Delta	3,597 km²	Delta	Asia
15	Arakan Yoma	3,108 km²	Range/mtn	Asia

Southeast Asia: Quick Answers

How many countries are in Southeast Asia?: YearMaps maps 11 countries and territories in Southeast Asia: Indonesia, Philippines, Vietnam, Thailand, Myanmar, Malaysia, Cambodia, Laos, Singapore, Timor-Leste, Brunei. Definitions of Southeast Asia vary; this list follows a common convention.
What is the largest country in Southeast Asia?: Indonesia is the largest by area at 1.90M km². Indonesia has the largest population, about 285.72 million.
What is the largest city in Southeast Asia?: Manila is the largest city recorded for Southeast Asia, with a metropolitan population of about 11.10 million.
What is the highest mountain in Southeast Asia?: Hkakabo Razi is the highest summit recorded for Southeast Asia in YearMaps, at 5,881 m.
What is the largest lake in Southeast Asia?: Tonle Sap is the largest lake recorded in Southeast Asia, at about 2,547 km².