|  | | Mtg_Title | Venue | From-To | |
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 | In continuous session or meeting as required |
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| Meetings continued from previous month |
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| April 2021 |
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| June 2021 |
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| August 2021 |
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 | October 2021 |
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| | . | UNCTAD, quadrennial conference, Fifteenth session | Bridgetown | 3 - 8 October | |
| | . | Commission on Narcotic Drugs, Heads of National Law Enforcement Agencies (HONLEA) Latin America and Caribbean, Thirtieth session (to be confirmed) | Santiago or a capital in the region | 4 - 8 October | |
| | . | Human Rights Committee, pre-sessional Working Group on Communications, 133rd session | Geneva | 4 - 8 October | |
| | . | Human Rights Council, intersessional forum on economic, social and cultural rights (Social Forum), Thirteenth session | Geneva | 4 - 5 October | |
| | . | Human Rights Council, Working Group on the issue of human rights and transnational corporations and other business enterprises, Thirtieth session | Geneva | 4 - 8 October | |
| | . | UNCITRAL, Working Group I (Micro-, Small and Medium-sized Enterprises), Thirty-sixth session (to be confirmed) | Vienna | 4 - 8 October | |
| | . | UNHCR, Executive Committee, Seventy-second session | Geneva | 4 - 8 October | |
| | . | United Nations Voluntary Fund for Victims of Torture, Board of Trustees, Fifty-fourth session | Geneva | 4 - 8 October | |
| | . | Organization for the Prohibition of Chemical Weapons, Executive Council, Ninety-eighth session | The Hague | 5 - 8 October | |
| | . | Commission on the Limits of the Continental Shelf, Fifty-fourth session*** | New York | 6 October - 23 November | |
| | . | Human Rights Council, Expert Mechanism on the Right to Development, Fourth session | Geneva | 6 - 8 October | |
| | . | Security Council, Governing Council of the United Nations Compensation Commission, established pursuant to Security Council resolution 692 (1991), Eighty-eighth session | Geneva | 6 October | |
| | . | States parties to the Convention against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment, Eighteenth session | Geneva | 7 October | |
| | . | Human Rights Committee, 133rd session | Geneva | 11 October - 5 November | |
| | . | Human Rights Council, Intergovernmental Working Group on the Effective Implementation of the Durban Declaration and Programme of Action, Nineteenth session | Geneva | 11 - 22 October | |
| | . | Human Rights Council, Working Group on discrimination against women and girls, Thirty-second session | Geneva | 11 - 15 October | |
| | . | Human Rights Council, Working Group on Situations, Twenty-eighth session | Geneva | 11 - 15 October | |
| | . | Conference of the Parties to the United Nations Convention against Transnational Organized Crime, Working Group on Trafficking in Persons, Eleventh session (to be confirmed) | Vienna | 12 - 13 October | |
| | . | Committee on the Elimination of Discrimination against Women, Working Group on Communications under the Optional Protocol to the Convention, Fifty-first session | Geneva | 13 - 15 October | |
| | . | Conference of the Parties to the United Nations Convention against Transnational Organized Crime, Working Group on the Smuggling of Migrants, Eighth session (to be confirmed) | Vienna | 14 - 15 October | |
| | . | Annual meetings of the Boards of Governors of the World Bank Group and IMF, Fall meetings | Marrakesh, Morocco | 15 - 17 October | |