██ ASEAN full member states██ ASEAN observer state█ █ ASEAN Plus Three █ █ █ East Asia Summit█ █ █ █ █ ASEAN Regional ForumAs of 2025[update] Association of Southeast Asian Nations (ASEAN) has 11member states and one observer state.
ASEAN wasfounded on 8 August 1967 with five member states:Indonesia ,Malaysia , thePhilippines ,Singapore , andThailand . It is headquartered inJakarta , Indonesia.
A list of member states is provided below. The members ofASEAN Plus Three and theEast Asia Summit are also listed. Both forums are ASEAN-led and meetings are held following theASEAN Summit .
Also listed are participants of theASEAN Regional Forum (ARF), an organisation throughout theAsia–Pacific region whose objectives are to foster dialogue and consultation, and promote confidence-building and preventive diplomacy in the region.[ 1]
The ASEAN is an organisation on theSoutheast Asian region that aims to accelerate economic growth, social progress, and cultural development among its members and to promote regional peace.[ 2]
ASEAN member states [ edit ] Country Capital Area(km2 ) Population Density (/km2 ) GDP HDI Currency Official languages Leaders Accession[ 3] Joining the ASEAN Regional Forum[ 4] Head of state Head of government Brunei Bandar Seri Begawan 5,765 411,900[ 5] 65 29,731 0.838 Brunei dollar Malay Hassanal Bolkiah 7 January 1984 1994 Cambodia Phnom Penh 181,035 15,626,444[ 6] 78 78,065 0.594 Cambodian riel [ a] United States dollar [ b] Khmer Norodom Sihamoni Hun Manet 30 April 1999 1995 Indonesia Jakarta 1,904,569 255,975,000[ 7] 113 3,507,239 0.718 Indonesian rupiah Indonesian Prabowo Subianto 8 August 1967 1994 Laos Vientiane 236,800 6,492,400[ 8] 24 62,797 0.613 Lao kip Lao Thongloun Sisoulith Sonexay Siphandone 23 July 1997 1994 Malaysia Kuala Lumpur 329,847 31,427,096[ 9] 72 978,781 0.810 Malaysian ringgit Malay Ibrahim Anwar Ibrahim 8 August 1967 1994 Myanmar Naypyidaw 676,578 51,419,420[ 10] 81 258,677 0.583 Burmese kyat Burmese Min Aung Hlaing (acting)Nyo Saw 23 July 1997 1996 Philippines Manila 343,448 103,371,800[ 11] 295 1,000,617 0.718 Philippine peso Filipino andEnglish Bongbong Marcos 8 August 1967 1994 Singapore Singapore 707.1 5,535,000[ 12] 6,619 600,063 0.938 Singapore dollar English ,Malay ,Mandarin , andTamil Tharman Shanmugaratnam Lawrence Wong 8 August 1967 1994 Thailand Bangkok 513,115 65,339,612[ 13] 126 1,329,324 0.777 Thai baht Thai Vajiralongkorn Anutin Charnvirakul 8 August 1967 1994 Timor-Leste Dili 14,874 1,231,116[ 14] 76.2 4,928 0.620 United States dollar Timor-Leste Centavo Tetum andPortuguese José Ramos-Horta Xanana Gusmão 26 October 2025 2005 Vietnam Hanoi 331,690 99,000,000[ 15] 248 1,148,054 0.704 Vietnamese đồng Vietnamese Tô Lâm [ c] Lương Cường Phạm Minh Chính 28 July 1995 1994 ASEAN (total)Jakarta (headquarters)4,479,210 673,655,000 135 5,869[ 16] [dubious discuss 0.729(UNDP cal.) — English (Working language) Kao Kim Hourn (Secretary-general )— —
ASEAN observer states [ edit ] ASEAN Plus Three Nation States [ edit ] The present members of ASEAN together with:
Country Capital Area(km2 ) Population Density (/km2 ) GDP per cap. HDI Currency Official languages Leaders Joining the ASEAN Regional Forum[ 4] Head of state Head of government China Beijing 9,640,011 1,371,790,000[ 20] 139.6 12,880 0.719 Chinese yuan Standard Chinese Xi Jinping [ d] Li Qiang 1994 Japan Tokyo 377,873 126,865,000[ 21] 337.6 37,390 0.890 Japanese yen Japanese (de facto )Naruhito Sanae Takaichi 1994 South Korea Seoul 100,140 51,448,183[ 22] 493 35,277 0.891 South Korean won Korean Lee Jae-myung 1994
The present members of ASEAN Plus Three together with:
Country Capital Area(km2 ) Population Density (/km2 ) GDP per cap. HDI Currency Official languages Leaders Joining the ASEAN Regional Forum[ 4] Head of state Head of government Australia Canberra 7,686,850 d 27,536,874[ 23] 3.7 64,547 0.958 Australian dollar English (de facto )Charles III Anthony Albanese 1994 India New Delhi 3,287,240 a 1,366,417,750[ 24] 364.4 5,855 0.586 Indian rupee ₹ )Hindi inDevanagari script andEnglish Droupadi Murmu Narendra Modi 1996 New Zealand Wellington 268,680 e 4,612,280[ 25] 16.1 35,152 0.910 New Zealand dollar English ,Māori , andNZ Sign Language Charles III Christopher Luxon 1994 Russia Moscow 17,075,400 c 146,567,880[ 26] 8.3 24,805 0.778 Russian ruble Russian Vladimir Putin Mikhail Mishustin 1994 United States Washington, D.C. 9,629,091 b 321,719,000[ 27] 32 54,597 0.914 United States dollar English (de facto )Donald Trump 1994
ASEAN Regional Forum [ edit ] The ASEAN Regional Forum is an informal multilateral dialogue of 27 members that seeks to address security issues in the Asia-Pacific region.
The list includes the members of the East Asia Summit plus:
Country Capital Area(km2 ) Population Density (/km2 ) GDP per cap. HDI Currency Official languages Leaders Joining the ASEAN Regional Forum[ 4] Head of state Head of government Bangladesh [ 28] Dhaka 148,460 b 159,143,012[ 29] 1,099.3 6,636 0.632 Bangladeshi taka Bengali Mohammed Shahabuddin Muhammad Yunus 2006 Canada Ottawa 9,984,670 c 41,651,653[ 30] 4.2 53,558 0.939 Canadian dollar English andFrench Charles III Mark Carney 1994 Mongolia Ulaanbaatar 1,564,115 e 3,032,606[ 31] 1.75 11,882 0.698 Mongolian tögrög Mongolian Ukhnaagiin Khürelsükh Gombojavyn Zandanshatar 1999 North Korea Pyongyang 120,540 d 25,155,000[ 32] 198.3 1,800 1,800 est. 0.766 0.540 (2012 UNDP) North Korean won Korean Kim Jong-un Pak Thae-song 2000 Pakistan Islamabad 796,095 a 191,198,263[ 33] 214.3 4,736 0.537 Pakistani rupee Urdu andEnglish Asif Ali Zardari Shehbaz Sharif 2004 Sri Lanka Sri Jayawardenepura Kotte (Administrative),Colombo (Commercial)65,610 20,771,00[ 34] 323 10,372 0.750 Sri Lankan rupee Sinhalese andTamil Anura Kumara Dissanayake Harini Amarasuriya 2007 European Union Brussels (de facto )4,233,262 447,706,209[ 35] 106 37,607 0.876 0.876 (UNDP cal.) Euro (EUR; €) and7 others Various António Costa Ursula von der Leyen 1994
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