January
- International Day of Commemoration in Memory of the Victims of the Holocaust – 21 January
February
- International Mother Language Day – 21 February
March
- United Nations Day for Women’s Rights and International Peace – 8 March
- International Day for the Elimination of Racial Discrimination – 21 March
- Week of Solidarity with the peoples struggling against Racism and Racial Discrimination – Beginning 21 March
- World Day for Water – 22 March
- World Meteorological Day – 23 March
April
- World Health Day – 7 April
- World Book and Copyright Day – 23 April
May
- World Press Freedom Day – 3 May
- International Day of Families – 15 May
- World Telecommunication Day – 17 May
- World Day for Cultural Diversity for Dialogue and Development – 21 May
- International Day for Biological Diversity – 22 May
- Week of Solidarity with the peoples of Non-Self-Governing Territories – Beginning 25 May
- World No-Tobacco Day – 31 May
June
- International Day of Innocent Children Victims of Aggression – 4 June
- World Environment Day – 5 June
- World Day to Combat Desertification and Drought – 17 June
- World Refugee Day – 20 June
- United Nations Public Service Day – 23 June
- International Day against Drug Abuse and Illicit Trafficking – 26 June
- International Day in Support of Victims of Torture – 26 June
July
- International Day of Cooperatives – First Saturday of July
- World Population Day – 11 July
August
- International Day of the World’s Indigenous People – 9 August
- International Youth Day – 12 August
- International Day for the Remembrance of the Slave Trade and Its Abolition – 23 August
September
- International Literacy Day – 8 September
- International Day for the Preservation of the Ozone Layer – 16 September
- International Day of Peace – 21 September
- World Maritime Day – Last Week in September
October
- International Day of Older Persons – 1 October
- World Space Week – 4-10 October
- World Teachers’ Day – 5 October
- World Habitat Day – 7 October (first Monday of October)
- International Day for Natural Disaster Reduction – 9 October (second Wednesday of October)
- World Post Day – 9 October
- World Mental Health Day – 10 October
- World Food Day – 16 October
- International Day for the Eradication of Poverty – 17 October
- United Nations Day – 24 OctoberWorld Development Information Day – 24 October
- Disarmament Week – 24-30 October
November
- International Day for Preventing the Exploitation of the Environment in War and Armed Conflict – 6 November
- International Day for Tolerance – 16 November
- Africa Industrialization Day – 20 November
- Universal Children’s Day – 20 November
- World Television Day – 21 November
- International Day for the Elimination of Violence against Women – 25 November
- International Day of Solidarity with the Palestinian People – 29 November
December
- World AIDS Day – 1 December
- International Day for the Abolition of Slavery – 2 December
- International Day of Disabled Persons – 3 December
- International Volunteer Day for Economic and Social Development – 5 December
- International Civil Aviation Day – 7 December
- Human Rights Day – 10 December
- International Mountain Day – 11 December
- International Migrants Day – 18 December
- United Nations Day for South-South Cooperation – 19 December