Head of State : His Majesty Sultan Haji Hassanal Bolkiah Mu'izzaddin Waddaulah
Capital : Bandar Seri Begawan
Language : Malay, English
Currency : B$ (Brunei Dollar)
Website: www.mfa.gov.bn
Head of State : His Majesty King Norodom Sihamoni
Capital : Phnom Penh
Language : Khmer
Currency : Riel
Website: www.mfaic.gov.kh
Head of State : President Joko Widodo
Capital : Jakarta
Language : Indonesian
Currency : Rupiah
Website: www.kemlu.go.id
Head of State : President Bounnhang Vorachith
Capital : Vientiane
Language : Lao
Currency : Kip
Website: www.mofa.gov.la
Head of State : His Majesty The King Almutasimu Billahi Muhibbuddin Tuanku Al-Haj Abdul Halim Mu'adzam Shah ibni Almarhum Sultan Badlishah
Capital : Kuala Lumpur
Language : Malay, English, Chinese, Tamil
Currency : Ringgit
Website:www.kln.gov.my
Head of State : President U Htin Kyaw
Capital : Nay Pyi Taw
Language : Myanmar
Currency : Kyat
Website: www.mofa.gov.mm
Head of State : President Rodrigo Roa Duterte
Capital : Manila
Language : Filipino, English, Spanish
Currency :Peso
Website: www.dfa.gov.ph
Head of State : President Halimah Yacob
Capital : Singapore
Language : English, Malay, Mandarin, Tamil
Currency : S$ (Singapore Dollar)
Website: www.mfa.gov.sg
Head of State : His Majesty King Maha Vajiralongkorn Bodindradebayavarangkun
Capital : Bangkok
Language : Thai
Currency : Baht
Website: www.mfa.go.th
Head of State : President Tran Dai Quang
Capital : Ha Noi
Language : Vietnamese
Currency : Dong
Website:www.mofa.gov.vn