How UPSC tests this: Three question types — (1) Match the organisation to its HQ/founding year, (2) India's membership status (founding member / year of joining / non-member), (3) Current heads and recent summits. Data below is verified to April 2026 — current-affairs developments (WHO withdrawals, BRICS expansion, BIMSTEC Charter) are flagged separately.

🌐 United Nations & Specialised Agencies

Organisation Founded HQ Members Current Head India's Status Key UPSC Fact
United Nations (UN) 1945
(San Francisco Charter)
New York, USA 193 member states + 2 observer states (Holy See, Palestine) António Guterres, Secretary-General (2nd term; ends 31 Dec 2026) Founding member (1945); permanent UNSC seat aspirant (P5: USA, UK, France, Russia, China) P5 members have veto power in UNSC. UNGA elects non-permanent UNSC members. Guterres' term ends Dec 2026 — successor selection underway.
IMF
(International Monetary Fund)
1944
(Bretton Woods)
Washington D.C., USA 190 member states Kristalina Georgieva, Managing Director (since Oct 2019) Founding member (1945); quota ~2.76%; 8th largest quota; voting share ~2.64% IMF deals with macroeconomic stability & BOP crises. India has NOT accepted an IMF bailout since 1991. Quota raised under 16th General Review (2023, +50% equiproportional increase).
World Bank Group 1944
(Bretton Woods; IBRD operational 1946)
Washington D.C., USA 5 institutions: IBRD, IDA, IFC, MIGA, ICSID Ajay Banga, President (since June 2023 — Indian-American) Founding member; largest single borrower — ~USD 39.3 bn outstanding loans (2025) World Bank funds development projects (≠ IMF which handles macroeconomic stability). IBRD = middle-income countries; IDA = poorest countries (India graduated from IDA eligibility).
WTO
(World Trade Organization)
1995
(replaced GATT 1947)
Geneva, Switzerland 166 members Ngozi Okonjo-Iweala, DG (2nd term from 1 Sep 2025 — first woman & first African DG) Founding member (1995); frequent party in dispute settlement WTO's Appellate Body effectively non-functional since 2019 (US blocking appointments) — major governance issue. India has used WTO dispute mechanism actively (sugar subsidies, solar panels, etc.).
WHO
(World Health Organization)
1948 Geneva, Switzerland 194 members (standard answer; USA withdrew Jan 2026, Argentina withdrew Mar 2026) Dr. Tedros Adhanom Ghebreyesus (since 2017; 2nd term till Aug 2027) Founding member (1948); active participant USA & Argentina withdrew in 2026 — significant current-affairs point. Standard prelims answer: 194 members. Use ~192 for post-Jan 2026 context.
UNESCO
(UN Educational, Scientific & Cultural Organization)
1945 Paris, France 194 member states (US withdrawal effective Dec 2026 — still full member until then) Khaled El-Enany, DG (since 15 Nov 2025 — first Arab DG, Egyptian) Founding member (1946); India has 40 UNESCO World Heritage Sites; re-elected to Executive Board 2025–29 UNESCO inscribes World Heritage Sites (cultural & natural) and Intangible Cultural Heritage. US withdrawal effective Dec 2026.
ILO
(International Labour Organization)
1919
(Treaty of Versailles — oldest UN specialised agency)
Geneva, Switzerland 187 member states Gilbert F. Houngbo, DG (since Oct 2022 — first African DG of ILO) Founding member since 28 Jun 1919; permanent member of Governing Body since 1922 ILO is tripartite — governments, employers & workers (unique structure). India has ratified 6 of 8 core conventions — has NOT ratified C87 (freedom of association) & C98 (right to organise/collective bargaining).
IAEA
(International Atomic Energy Agency)
1957 Vienna, Austria 178 member states Rafael Grossi, DG (since Dec 2019) IAEA member; India–IAEA Safeguards Agreement in force since Aug 2008 (item-specific, not full-scope NPT safeguards) India is not a signatory to NPT; India is not a member of NSG (bid blocked by China). India has item-specific IAEA safeguards (only declared civilian facilities), not comprehensive safeguards.

🤝 Plurilateral Groupings & Regional Bodies

Organisation Founded HQ Members Current Head / Chair India's Status Key UPSC Fact
BRICS 2009
(first leaders' summit, Yekaterinburg; BRIC FMs met 2006)
No permanent HQ
(rotating chair)
10 full members: Original 5 (Brazil, Russia, India, China, South Africa) + Egypt, Ethiopia, Iran, UAE (Jan 2024) + Indonesia (Jan 2025). Partner country category also created (9+ partners including Saudi Arabia). India holds BRICS Chairmanship 2026 (4th time; earlier: 2012, 2016, 2021) Founding member (BRIC 2006) South Africa joined in 2011 (turning BRIC to BRICS). 2024 Kazan Summit expanded to 9+. Saudi Arabia was invited but has not formally joined. Indonesia joined Jan 2025 as 10th full member.
SCO
(Shanghai Cooperation Organisation)
2001
(Shanghai; Shanghai Five existed from 1996)
Beijing, China (Secretariat); Tashkent (RATS — anti-terror body) 10 full members: China, Russia, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan, India, Pakistan, Iran (2023), Belarus (2024) Nurlan Yermekbayev (Kazakhstan), Secretary-General (Jan 2025–Dec 2027) Full member since 2017 (Astana Summit) — India and Pakistan admitted simultaneously RATS (Regional Anti-Terrorist Structure) is SCO's key security body. India joined same summit as Pakistan — often tested. Iran joined 2023; Belarus joined 2024.
G20 1999
(finance ministers); Leaders' Summits from 2008
No permanent HQ
(rotating presidency hosts)
21 members: 19 countries + EU + African Union (admitted at India's 2023 New Delhi Summit) USA holds 2026 Presidency (Miami Summit); South Africa held 2025 Founding member; India held 2023 Presidency (New Delhi Summit; theme: Vasudhaiva Kutumbakam) G20 covers ~85% of world GDP and ~75% of global trade. African Union admitted at India's 2023 summit — high-yield exam fact. G20 ≠ treaty organisation — no permanent secretariat.
ASEAN
(Association of Southeast Asian Nations)
1967
(Bangkok Declaration, 8 Aug 1967)
Jakarta, Indonesia (Secretariat) 10 members: Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, Philippines, Singapore, Thailand, Vietnam Dr. Kao Kim Hourn (Cambodia), Secretary-General (2023–2027) Comprehensive Strategic Partnership (CSP) since 2022; Dialogue Partner since 1992; India is NOT a member of ASEAN Timor-Leste is observer and candidate for 11th membership. India has ASEAN-India FTA (goods). ASEAN's founding five: Indonesia, Malaysia, Philippines, Singapore, Thailand.
Commonwealth
(of Nations)
1949
(London Declaration — modern Commonwealth)
Marlborough House, London, UK 56 member states Shirley Ayorkor Botchwey (Ghana), Secretary-General (since 1 April 2025 — replaced Patricia Scotland) Founding member (1949 London Declaration); largest population contributor (~1.4 bn) Commonwealth is voluntary — operates by consensus, not binding treaty. Mozambique and Rwanda are members despite no colonial British link. Head of the Commonwealth: King Charles III.
Quad
(Quadrilateral Security Dialogue)
2007 (original, under PM Abe); revived 2017; Leaders' Summits from 2021 No permanent HQ or Secretariat (informal grouping) 4 members: India, USA, Japan, Australia No permanent head (rotating host); Leaders' Summit held annually Full member Quad is NOT a treaty-based alliance — no Article 5-style mutual defence clause. Focus: free & open Indo-Pacific, supply chain resilience, health security, climate, critical tech. China views it as "Asian NATO" — India rejects that framing.

🌏 South Asia & India's Neighbourhood

Organisation Founded HQ Members India's Status & Key Fact
NAM
(Non-Aligned Movement)
1961
(1st Summit, Belgrade, 1–6 Sep 1961)
No permanent HQ
(host country chairs)
121 member states + 17 observer states Founding member; Nehru was one of five founders (with Tito of Yugoslavia, Nasser of Egypt, Nkrumah of Ghana, Sukarno of Indonesia). NAM principles (Panchsheel) are basis of India's foreign policy.
SAARC
(South Asian Association for Regional Cooperation)
1985
(Dhaka Charter, 8 Dec 1985)
Kathmandu, Nepal
(Secretariat since Jan 1987)
8 members: Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, Sri Lanka Founding member. No summit since 2014 (18th Summit, Kathmandu). 19th summit was to be held in Pakistan (2016) but India withdrew after Uri attack — SAARC effectively stalled due to India-Pakistan tensions.
BIMSTEC
(Bay of Bengal Initiative for Multi-Sectoral Technical & Economic Cooperation)
1997
(as BIST-EC); renamed BIMSTEC 2004
Dhaka, Bangladesh
(Permanent Secretariat since 2014)
7 members: Bangladesh, Bhutan, India, Myanmar, Nepal, Sri Lanka, Thailand Leading member; contributes 32% of Secretariat budget; lead country for 4 priority sectors. BIMSTEC Charter signed Mar 2022 (5th Summit, Colombo); came into force April 2024 after all ratifications — major UPSC update. India promotes BIMSTEC as alternative to stalled SAARC.

🚫 Key Organisations India is NOT a Member Of

OrganisationWhy India is Not a MemberIndia's Status
NPT (Nuclear Non-Proliferation Treaty) India considers NPT discriminatory — it recognises only 5 nuclear weapon states (P5) and requires others to give up nuclear weapons. India tested nuclear weapons in 1974 (Smiling Buddha) and 1998 (Pokhran-II) outside NPT framework. Non-signatory
NSG (Nuclear Suppliers Group) NSG requires NPT membership for full membership. India bid for membership in 2016; China blocked. However, India operates under a special waiver (2008 NSG waiver) allowing civil nuclear trade. Non-member; operates under 2008 NSG waiver
ASEAN India is a geographically non-Southeast Asian country. India is a Dialogue Partner and Comprehensive Strategic Partner, not a member. Comprehensive Strategic Partnership (CSP) since 2022
OECD (Organisation for Economic Co-operation and Development) OECD is primarily a club of advanced/developed economies. India has had Enhanced Engagement status; accession negotiations opened 2023. Accession discussions ongoing (2023–); not yet a member
OPEC (Organisation of Petroleum Exporting Countries) India is a net oil importer, not an oil-exporting country. India is not eligible for membership. Not applicable (importer); India is in IEA (International Energy Agency)

⚡ Quick Recall — HQ Mapping

CityOrganisations HQ'd Here
Geneva, SwitzerlandWHO · WTO · ILO · UNHCR · ICRC · ITU · WIPO · WMO · IOM
New York, USAUN (HQ) · UNICEF · UNDP · UN Women
Washington D.C., USAIMF · World Bank Group · IFC · OAS
Paris, FranceUNESCO · OECD · IEA · Interpol
Vienna, AustriaIAEA · OPEC · UNODC · OSCE · UNIDO
Rome, ItalyFAO · WFP · IFAD
Nairobi, KenyaUNEP · UN-Habitat
London, UKCommonwealth (Marlborough House) · IMO · IAEA safeguards tribunal
Brussels, BelgiumNATO · EU (Council, Commission) · Eurocontrol
Beijing, ChinaSCO Secretariat · AIIB
Jakarta, IndonesiaASEAN Secretariat
Kathmandu, NepalSAARC Secretariat
Dhaka, BangladeshBIMSTEC Secretariat
The Hague, NetherlandsICJ · ICC · OPCW · Eurojust

⚠️ High-Frequency Exam Traps

Trap / MCQ PointCorrect Answer
WTO replaced which organisation?GATT (General Agreement on Tariffs and Trade, 1947). WTO established 1995.
ILO is the oldest UN specialised agency?Yes — ILO was founded in 1919 (Treaty of Versailles), predating the UN itself (1945). It became a UN specialised agency in 1946.
India joined SCO in which year?2017 (Astana Summit). India and Pakistan joined simultaneously.
African Union was admitted to G20 at which summit?India's 2023 New Delhi Summit. AU became the 21st member of G20.
BIMSTEC has how many members?7: Bangladesh, Bhutan, India, Myanmar, Nepal, Sri Lanka, Thailand. (Pakistan is NOT a member — common trap.)
SAARC has how many members?8: Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, Sri Lanka.
India is a founding member of the IMF?Yes — India joined in 1945 at the inception of the Bretton Woods institutions.
Where is the IMF headquartered?Washington D.C., USA — same as World Bank. Both are Bretton Woods institutions but serve different functions.
World Bank President is always from the USA?Traditionally yes — but Ajay Banga (Indian-American) became President in June 2023. He is the first person of Indian origin to hold this role.
Does India have a veto in the UN Security Council?No. Only the P5 (USA, UK, France, Russia, China) have veto power. India is a non-permanent UNSC member (elected periodically).
NAM was founded at which conference?1st Belgrade Summit, 1–6 September 1961. The Bandung Conference (1955) was a precursor but is NOT the founding conference of NAM.
Is Quad a formal military alliance?No. Quad has no treaty basis, no permanent secretariat, no Article 5-type mutual defence clause. It is an informal security dialogue.
BRICS had how many members before 2024?5 (Brazil, Russia, India, China, South Africa). In 2024 (Kazan Summit), 4 new members joined in January 2024; Indonesia joined January 2025 → now 10 full members.
ASEAN has how many members?10 — Timor-Leste is a candidate for 11th membership but has NOT yet joined.
Exam strategy: For international organisations, UPSC tests three layers — (1) static facts (HQ, founding year, member count), (2) India's specific status (founding member vs later joiner, member vs non-member, dialogue partner vs full member), (3) current-affairs updates (new heads, new members, summits, withdrawals). Always note what India is not part of — NPT, NSG, ASEAN — as these are frequent traps.