Brunei Darussalam

Capital : Bandar Seri Begawan

Language(s) : Malay, English

Currency : B$ (Brunei Dollar)

Ministry of Foreign Affairs & Trade of Brunei Darussalam Website: www.mfa.gov.bn

Cambodia

Capital : Phnom Penh

Language : Khmer

Currency : Riel

Ministry of Foreign Affairs & International Cooperation of Cambodia Website: www.mfaic.gov.kh

Indonesia

Capital : Jakarta

Language : Indonesian

Currency : Rupiah

Ministry of Foreign Affairs of Indonesia Website: www.kemlu.go.id

Lao PDR

Capital : Vientiane

Language : Lao

Currency : Kip

Ministry of Foreign Affairs of Lao PDR Website: www.mofa.gov.la

Malaysia

Capital : Kuala Lumpur

Language(s) : Malay, English, Chinese, Tamil

Currency : Ringgit

Ministry of Foreign Affairs of Malaysia Website: www.kln.gov.my

ASEAN-Malaysia National Secretariat Website: www.kln.gov.my/myasean

Myanmar

Capital : Nay Pyi Taw

Language : Myanmar

Currency : Kyat

Ministry of Foreign Affairs of Myanmar Website: www.mofa.gov.mm

Philippines

Capital : Manila

Language(s) : Filipino, English, Spanish

Currency : Peso

Department of Foreign Affairs of the Philippines Website: www.dfa.gov.ph

Singapore

Capital : Singapore

Language(s) : English, Malay, Mandarin, Tamil

Currency : S$ (Singapore Dollar)

Ministry of Foreign Affairs of Singapore Website: www.mfa.gov.sg

Thailand

Capital : Bangkok

Language : Thai

Currency : Baht

Ministry of Foreign Affairs of Thailand Website: www.mfa.go.th

Viet Nam

Capital : Ha Noi

Language : Vietnamese

Currency : Dong

Ministry of Foreign Affairs of Viet Nam Website: www.mofa.gov.vn

source: http://www.asean.org/asean/asean-member-states