The Argentine Centennial International Exhibition (Spanish: Exposición Internacional del Centenario Argentino) was an exhibition held between May and November 1910 in Buenos Aires, to commemorate the Centennial of the May Revolution in Argentina (the formation of the first local government on May 25, 1810).

With a population of around 1.2 million, Buenos Aires was then the largest urban complex in Latin America, the eighth city in the world, and one of the richest.

[1] A number of young Italian architects, including Virginio Colombo, Francisco Gianotti and Mario Palanti who designed the Italian pavilion, went on to establish successful careers in Buenos Aires working in a number of styles, including Art Nouveau.

Their buildings were some of the most important of the 20th century in Buenos Aires and those that remain continue to play a significant role in defining the city's architectural landscape.

Each pavilion feature a different theme, such as: In addition there were pavilions for several of the Argentine provinces, including Córdoba, Mendoza, Salta, Jujuy and Tucumán, and for countries including Spain, Italy, Germany, England, Switzerland, Austro-Hungarian Empire and Paraguay.