Southeast Asia includes the following countries: Burma (Myanmar), Cambodia, Laos, Thailand, Vietnam, and Peninsular Malaysia (on the Asian mainland) along with East Malaysia, Brunei, Indonesia, the Philippines, Singapore, and Timor-Leste (archipelagos and islands to the east).
The five most populous countries in Southeast Asia (in order from most populous to least) are: Indonesia, the Philippines, Vietnam, Thailand, and Malaysia.
Indonesia and the Philippines
Indonesia is the most populated country in Southeast Asia and also the 4th in the world. The most populous island of Indonesia is Java.
The most populous country in Asia is China. India, Indonesia, Pakistan, and Bangladesh are the next most populous countries, in that order.
Indonesia has 280 million people, making it the most populous country in Southeast Asia and within the top five most populous countries in the world. However, Vietnam, with 90 million people is the most populous mainland country in Southeast Asia. (Indonesia is only islands, so it is not a mainland country.)
Phnom Penh is the capital and most populous city of Cambodia.
Bangkok is the capital and most populous city of the Kingdom of Thailand, a country in southeast Asia.
Bangkok is the capital and most populous city of the Kingdom of Thailand, a country in southeast Asia.
China is the most populous country in southeast Asia.If China is not counted as being part of southeast Asia, then it is Indonesia.
Bangkok is the capital and most populous city of the Kingdom of Thailand, a country in southeast Asia.
Bangkok is the capital and most populous city of the Kingdom of Thailand, a country in southeast Asia.
The Himalayan Mountains separate India from the rest of Asia.
Bangkok is the capital and most populous city of the Kingdom of Thailand, a country in southeast Asia.