Flag of Uruguay
Uruguay’s flag has nine horizontal stripes, five white and four blue, with a white square in the top corner by the pole holding the Sun of May, a sun with a face and 16 rays. The Intendencia de Canelones says the stripes stand for the nine departments into which Uruguay was divided when the first flag was made in 1828.
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The national flag (Pabellón Nacional) was fixed by the laws of December 1828 and 12 July 1830. The 1828 law, as the Intendencia de Canelones quotes it, made the flag white with nine light blue horizontal stripes, alternating, leaving a white square in the upper corner by the staff in which the sun was to be placed. The 1830 law cut the stripes to four blue and five white and kept the meaning of the departments. A decree of 18 February 1952 specified the sun as a radiant circle with a face, ringed by 16 rays; before 1952 the face was drawn by tradition. Decree 557/976 of 24 August 1976 calls the Pabellón Nacional the highest-ranking national symbol and has it flown every day on state buildings, and on national days and when the Ministry of the Interior so orders, the flags of Artigas and of the Thirty-Three are flown with it.
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Why the blue stripes went from nine to four
The newspaper La Mañana says the members of the 1830 assembly changed the flag because the 1828 model, in light blue, looked very like the flag of the United Provinces of the Río de la Plata, today Argentina. The first flag was the initiative of Joaquín Suárez, the acting governor, and at midday on 1 January 1829 Suárez raised it in the centre of the square of the Villa de Guadalupe, at the request of the new governor, José Rondeau. Its nine light blue stripes were for the nine departments of 1828: Montevideo, Canelones, San José, Colonia, Soriano, Maldonado, Durazno, Cerro Largo and Paysandú, which then took in all the territory north of the Río Negro.
The Sun of May, shared with Argentina
Argentina’s flag carries the same Sun of May, a sign of the May Revolution of 1810, the Buenos Aires newspaper La Nación notes. The two suns differ in their rays: Argentina’s has 32, alternating 16 straight and 16 flaming, and Uruguay’s has 16. Argentina’s sun sits in the centre of a white stripe between two light blue ones; Uruguay’s is in the top corner by the pole, over a field of nine stripes.
Uruguay’s and Greece’s flags
Greece’s flag also has nine horizontal stripes of blue and white with a square in the top corner by the pole. Its law makes five of the stripes blue and four white, with blue at the top and bottom, and puts an upright white cross in a blue square in the corner. Uruguay’s has white at the top and bottom, and a golden sun on white in the corner.
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- The same shape in African flagsFlag of EthiopiaEthiopia’s flag is green, yellow and red in equal horizontal stripes with a blue disc in the centre holding a yellow star of equal lines with yellow rays. Ethiopia’s Flag Proclamation makes the green labour, fertility and development, the yellow hope, justice and equality, and the red sacrifice and heroism for freedom and equality; the blue disc is peace and the star the unity of Ethiopia’s nations, nationalities and peoples.
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The same shape elsewhere
Browse symbols drawn with circles, lines or squares and rectangles.
Sources
- 182º Aniversario del Primer Pabellón Nacional (Intendencia de Canelones), Intendencia de Canelones, news item, December 2010, Intendencia de Canelones, Whole page
- Decreto N° 557/976, Regulación del enarbolado del Pabellón Nacional y banderas de Artigas y los Treinta y Tres, Decreto 557/976, 24 August 1976, Diario Oficial 2 September 1976 (IMPO), IMPO, Centro de Información Oficial (Uruguay), Considerando II; arts. 1 and 4
- Día de la Independencia y los pabellones que ondearon en nuestro territorio (La Mañana), La Mañana (Montevideo), August 2025, La Mañana, Whole article
- Qué dice “la ciencia de las banderas” sobre cómo es correcto usar el Sol de Mayo (La Nación), La Nación (Buenos Aires), 20 June 2025, La Nación, Closing section
- Bandera Nacional (Argentina.gob.ar), Presidencia de la Nación, “Bandera Nacional”, Símbolos Patrios, argentina.gob.ar, Presidencia de la Nación (Argentina), La Bandera Oficial
- Νόμος 851/1978: Περί της Εθνικής Σημαίας, των Πολεμικών Σημαιών και του Διακριτικού Σήματος του Προέδρου της Δημοκρατίας, Ν. 851/1978, ΦΕΚ Α-233/22-12-1978, e-nomothesia.gr, Άρθρο 1
Researched, edited and approved by Rory Hansen before publishing. Last reviewed October 13, 2026. How we research
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