Flag of the United Nations
|Proportion||2:3 or 3:5 [a]|
|Adopted||December 7, 1946|
|Design||A white UN emblem (a polar azimuthal equidistant projection world map surrounded by two olive branches) on a blue background.|
|Designed by||Donal McLaughlin (emblem only)|
The emblem's design is described as:
A map of the world representing an azimuthal equidistant projection centred on the North Pole, inscribed in a wreath consisting of crossed conventionalized branches of the olive tree, . . . The projection of the map extends to 60 degrees south latitude, and includes five concentric circles.— Official Seal and Emblem of the United Nations, Report of the Secretary-General, 15 October 1946 
The light blue background colour code is Pantone Matching System 2925. 
The organizers of the 1945 United Nations Conference on International Organization in San Francisco, California wanted an insignia that could be made into a pin to identify delegates. United States Secretary of State Edward Stettinius, Jr. was chairperson of the U.S. delegation, and realized that a temporary design might become the permanent symbol of the United Nations. He formed a committee headed by Oliver Lundquist that developed a design consisting of a world map surrounded by leaves from a design created by Donal McLaughlin.  
McLaughlin had previously worked as chief of graphics for the Office of Strategic Services that preceded the CIA. The azimuthal equidistant projection used in his design was heavily influenced by the maps created during World War II by Richard Edes Harrison, a popular cartographer working for Fortune and Life.  .
The blue that appears in the background of the insignia was chosen to be "the opposite of red, the war colour",  although the exact shade has never been officially specified by the United Nations.  The original colour the group chose in 1945 was a gray blue that differs from the current United Nations flag. The globe used in the original design was an azimuthal projection focused on the North Pole with the United States, the host nation of the conference, at the centre. The projection that was used cut off portions of the Southern Hemisphere at the latitude of Argentina, which was acceptable at the time, as Argentina was not planned to be an original member of the United Nations.  The projection was later altered so that no country will be at prominence within the flag. The new logo was now designed so that the globe is bisected in the centre by the Prime Meridian and the International Date Line.
In 1946, a UNO committee got the task of making a definite design, which was presented December 2, 1946, and adopted by the plenary session of the UNO on December 7, 1946. The earlier version had the globe 90 degrees turned eastward compared with the present flag, which has the Prime Meridian and the International Date Line forming the vertical diameter. According to press statements, the change was made to move North America away from the centre of the emblem. 
According to the Convention on the Safety of United Nations and Associated Personnel, the emblem and the flag of the United Nations can be used by the personnel and material of UN peacekeeping missions as a protective sign to prevent attacks during an armed conflict.
The United Nations flag may also be flown as a garrison flag with other country flags. Garrison size is 10 feet by 30 feet.
Agencies and organizations
- The flag of the World Food Programme has the olive leaves of the UN flag, with a hand clutching grains in the centre, in place of the globe. The white/blue colours of the UN flag are reversed in the WFP flag.
|Image||Entity abbrev.||Entity name||Image description|
|IAEA||International Atomic Energy Agency||The IAEA has a flag with the same colours and olive branches as the United Nations. The central symbol is the Bohr model of the Beryllium-atom with four electrons.  The IAEA is independent of but reporting to the United Nations.|
|ICAO||International Civil Aviation Organization||Is that of the UN with pilot's wings superimposed.|
|ILO||International Labour Organization||Is that of the UN, but replacing the map with an interrupted gear wheel with the letters "ILO" inside it.|
|IMO||International Maritime Organization||Takes the UN flag, shrinks the map image and puts a chained cross of anchors behind it.|
|ITU||International Telecommunication Union||Has the ITU logo—a globe, lightning bolt, and the letters "ITU".|
|UNESCO||United Nations Educational, Scientific and Cultural Organization||Has the same colours as the United Nations; its symbol is a Greek temple (possibly the Parthenon), representing science, learning and culture. The six columns are made of the letters of the organization's name.|
|UNICEF||United Nations Children's Fund||Has the leaves and globe of the UN flag but with a mother and child inlay instead of the world map.|
|UPU||Universal Postal Union||Is UN blue with the organization's logo in white.|
|WHO||World Health Organization||Identical to the UN flag, with a Rod of Asclepius, a traditional symbol of medicine, added.|
|WMO||World Meteorological Organization||The flag is that of the UN with a compass rose and the letters "OMM/WMO" atop the globe.|
- The flag of Somalia, with central symbol a five-pointed star, uses the UN's blue colour in honour of the UN's help in gaining Somalia's independence.  
- The UNTAC UN administration of Cambodia used UN colours. 
- Perhaps the most popular proposed flag of Antarctica (the Graham Bartram design) uses the UN colours,  consisting of a plain white representation of the continent on a blue background.
- A number of proposed flags of Bosnia and Herzegovina used UN colours. 
- A proposed flag for a United Nations Parliamentary Assembly uses the same colours and olive branches and uses the cartographic elements of the globe to create what appear to be parliamentary benches.
Use outside UN
- The UN flag is depicted in the background of former UN Secretary-General Dag Hammarskjöld on Sweden's 1,000 SEK banknote, the currency's highest denomination. The banknotes have been in circulation since October 2015. 
- Or using the same proportions of the national flag of whatever country it is flown in, with the emblem being centred and one half of the hoist.
- UN General Assembly A/107, Official Seal and Emblem of the United Nations, 15 October 1946
- Department of the Air Force (1 August 1957). Use and Display of Air Force Flags, Guidons, Streamers, and Automobile and Aircraft Plates.
- United Nations Flag Code, 20 November 2020
- Bertram, Hulen. "Origin of the UNO Seal", The New York Times, March 10, 1946. Accessed January 4, 2009.
- Lyons, Catherine. "UN Logo Designer Celebrates His Centennial" Archived 2008-10-10 at the Wayback Machine, United Nations Association, c. 1975. Accessed January 4, 2009.
- Immerwahr, Daniel (2019). "13. Kilroy was here". How to hide an empire: geography, territory, and power in the greater united states. The Bodley Head ltd. ISBN 978-1847923998. OCLC 1038055837.
- Capdepuy, Vincent (2015). "L'entrée des États-Unis dans l'" âge global " : un tournant géohistorique ?". Monde(s) (in French). 8 (2): 177. doi: 10.3917/mond1.152.0177. ISSN 2261-6268.
- UN General Assembly A/107, Official Seal and Emblem of the United Nations, 15 October 1946. Accessed March 15, 2010.
- Flags Of The World, United Nations Organization, Flag Colour. Accessed March 15, 2010.
- Heller, Steven. "Oliver Lincoln Lundquist, Designer, Is Dead at 92 ", The New York Times, January 3, 2009. Accessed January 4, 2009.
- Flags Of The World, United Nations Organization, UN Flag, 1945
- Alex Wellerstein (2013-01-11). "The story behind the IAEA's atomic logo". Restricted Data - the Nuclear Secrecy Blog. Retrieved 2017-03-22.
- Znamierowski, Alfred (1999). The World Encyclopedia of Flags. p. 222. ISBN 0-7548-0167-5.
- Talocci, Mauro (1982). Smith, Whitney (ed.). Guide to the Flags of the World. p. 131. ISBN 0-688-01141-1.
- "Cambodian flag history".
- Flag of Antarctica#Graham Bartram
- Flag of Bosnia and Herzegovina#Alternative flag variations (change of flag)
- "New banknotes". Sveriges Riksbank. Retrieved 1 June 2013.
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