Established in: 1946
Global presence: 6 countries

UNICEF, originally the United Nations International Children's Emergency Fund, officially United Nations Children's Fund since 1953,[a] is an agency of the United Nations responsible for providing humanitarian and developmental aid to children worldwide. The organization is one of the most widely known and visible social welfare entities globally, operating in 192 countries and territories. UNICEF's activities include providing immunizations and disease prevention, administering treatment for children and mothers with HIV, enhancing childhood and maternal nutrition, improving sanitation, promoting education, and providing emergency relief in response to disasters.

UNICEF is the successor of the United Nations International Children's Emergency Fund, and was created on 11 December 1946, in New York, by the U.N. Relief Rehabilitation Administration to provide immediate relief to children and mothers affected by World War II. The same year, the United Nations General Assembly established UNICEF to further institutionalize post-war relief work. In 1950, its mandate was extended to address the long-term needs of children and women, particularly in developing countries. In 1953, the organization became a permanent part of the United Nations System, and its name was changed to United Nations Children's Fund, though it retains the UNICEF acronym.