| World Braille Day | 2026-01-04 |
| World Logic Day | 2026-01-14 |
| International Day of Education | 2026-01-24 |
| International Day of Clean Energy | 2026-01-26 |
| International Day of Commemoration in Memory of the Victims of the Holocaust | 2026-01-27 |
| World Radio Day | 2026-02-13 |
| World Day of Social Justice | 2026-02-20 |
| International Mother Language Day | 2026-02-21 |
| World Wildlife Day | 2026-03-03 |
| International Women's Day A global day celebrating the social, economic, cultural, and political achievements of women. | 2026-03-08 |
| International Day of Forests | 2026-03-21 |
| World Poetry Day | 2026-03-21 |
| World Water Day | 2026-03-22 |
| World Meteorological Day | 2026-03-23 |
| International Day of Zero Waste | 2026-03-30 |
| World Autism Awareness Day | 2026-04-02 |
| International Day of Conscience | 2026-04-05 |
| International Day of Sport for Development and Peace | 2026-04-06 |
| World Health Day A global health awareness day observed every year. | 2026-04-07 |
| World Art Day | 2026-04-15 |
| Earth Day A day dedicated to environmental protection and awareness. | 2026-04-22 |
| World Book and Copyright Day | 2026-04-23 |
| International Day of Multilateralism and Diplomacy for Peace | 2026-04-24 |
| International Jazz Day | 2026-04-30 |
| World Press Freedom Day | 2026-05-03 |
| International Mothers' Day (Global Observance) | 2026-05-10 |
| International Day of Families | 2026-05-15 |
| International Day of Light | 2026-05-16 |
| International Day of Living Together in Peace | 2026-05-16 |
| World Fair Play Day | 2026-05-19 |
| World Bee Day | 2026-05-20 |
| World Day for Cultural Diversity for Dialogue and Development | 2026-05-21 |
| World Meditation Day | 2026-05-21 |
| International Day for Biological Diversity | 2026-05-22 |
| International Day of United Nations Peacekeepers | 2026-05-29 |
| World Milk Day | 2026-06-01 |
| World Bicycle Day | 2026-06-03 |
| International Day for the Fight against Illegal, Unreported and Unregulated Fishing | 2026-06-05 |
| World Environment Day The United Nations' principal vehicle for encouraging awareness and action for the environment. | 2026-06-05 |
| World Oceans Day A day to celebrate the ocean and raise awareness of its importance. | 2026-06-08 |
| International Albinism Awareness Day | 2026-06-13 |
| International Day of the African Child | 2026-06-16 |
| World Refugee Day | 2026-06-20 |
| International Day of Yoga | 2026-06-21 |
| International Day of the Seafarer | 2026-06-25 |
| International Day against Drug Abuse and Illicit Trafficking | 2026-06-26 |
| Micro-, Small and Medium-sized Enterprises Day | 2026-06-27 |
| World Humanitarian Logistics Day | 2026-06-28 |
| International Day of Parliamentarism | 2026-06-30 |
| International Day of Cooperatives | 2026-07-04 |
| World Population Awareness Day | 2026-07-11 |
| World Population Day A day to focus attention on the urgency and importance of population issues. | 2026-07-11 |
| World Youth Skills Day | 2026-07-15 |
| Nelson Mandela International Day | 2026-07-18 |
| International Moon Day | 2026-07-20 |
| World Drowning Prevention Day | 2026-07-25 |
| International Day of Friendship | 2026-07-30 |
| International Mountain Biking Day | 2026-07-30 |
| World Day against Trafficking in Persons | 2026-07-30 |
| International Day of the World's Indigenous Peoples | 2026-08-09 |
| International Youth Day A day celebrating young people's voices, actions, and initiatives. | 2026-08-12 |
| International Day for the Remembrance of the Slave Trade and its Abolition | 2026-08-23 |
| World Maritime Day | 2026-09-03 |
| International Day of Charity | 2026-09-05 |
| International Literacy Day A day to highlight the importance of literacy for individuals, communities, and societies. | 2026-09-08 |
| Programmer's Day Celebrated on the 256th day of the year. | 2026-09-13 |
| International Coastal Cleanup Day | 2026-09-19 |
| World Cleanup Day A global civic movement that unites millions of volunteers to clean up waste and mismanaged trash. | 2026-09-19 |
| International Day of Peace A day devoted to strengthening the ideals of peace. | 2026-09-21 |
| International Day of Sign Languages | 2026-09-23 |
| World Tourism Day | 2026-09-27 |
| International Day for Universal Access to Information | 2026-09-28 |
| International Translation Day | 2026-09-30 |
| International Day of Older Persons | 2026-10-01 |
| World Smile Day Celebrated on the first Friday in October to encourage acts of kindness and goodwill. | 2026-10-02 |
| World Space Week (Opening Day) | 2026-10-04 |
| World Habitat Day Observed on the first Monday of October to reflect on the state of towns and cities. | 2026-10-05 |
| World Teachers' Day A day to celebrate teachers and their role in providing quality education. | 2026-10-05 |
| International Day of the Girl Child | 2026-10-11 |
| International Day for Disaster Risk Reduction | 2026-10-13 |
| World Food Day | 2026-10-16 |
| World Statistics Day | 2026-10-20 |
| United Nations Day Marks the anniversary of the entry into force of the UN Charter. | 2026-10-24 |
| World Day for Audiovisual Heritage | 2026-10-27 |
| World Tsunami Awareness Day | 2026-11-05 |
| World Science Day for Peace and Development | 2026-11-10 |
| World Kindness Day | 2026-11-13 |
| World Day of Remembrance for Road Traffic Victims Observed on the third Sunday of November to remember those killed and injured on the roads. | 2026-11-15 |
| World Philosophy Day | 2026-11-19 |
| World Children's Day | 2026-11-20 |
| International Day of Solidarity with the Palestinian People | 2026-11-29 |
| World Disability Day | 2026-12-03 |
| International Volunteer Day | 2026-12-05 |
| World Soil Day | 2026-12-05 |
| International Civil Aviation Day | 2026-12-07 |
| International Anti-Corruption Day | 2026-12-09 |
| Human Rights Day Commemorates the adoption of the Universal Declaration of Human Rights. | 2026-12-10 |
| International Mountain Day | 2026-12-11 |
| International Universal Health Coverage Day | 2026-12-12 |
| World Arabic Language Day | 2026-12-18 |
| International Human Solidarity Awareness Day | 2026-12-20 |
