United Nations (UN) International Weeks
| Period | International Week | Organization |
| 1–7 February | World Interfaith Harmony Week | United Nations |
| 21–27 March | Week of Solidarity with the Peoples Struggling against Racism and Racial Discrimination | United Nations |
| 24–30 April | World Immunization Week | World Health Organization (WHO) |
| 25–31 May | Week of Solidarity with the Peoples of Non-Self-Governing Territories | United Nations |
| 1–7 August | World Breastfeeding Week* | WHO & UNICEF |
| 4–10 October | World Space Week | United Nations & World Space Week Association |
| 24–30 October | United Nations Disarmament Week | United Nations |
| Week containing 11 November | International Week of Science and Peace | United Nations |
Note: World Breastfeeding Week is observed globally from 1–7 August and is supported by WHO and UNICEF. It is an internationally recognized health observance rather than one of the weeks originally proclaimed through a UN General Assembly resolution