Modernismo, late 19th- and early 20th-century Spanish-language literary movement that emerged in the late 1880s and is perhaps most often associated with the Nicaraguan poet Rubén Darío, who was a central figure. A turning point in the movement was the publication of Azul (1888; “Blue”), Darío’s book of poems and short stories. While the movement had no manifesto or organized principles, it stemmed from a reaction against the literary naturalism of Émile Zola and against the wider bourgeois conformity and materialism of Western society. The poets of the Modernismo movement were influenced by the French Symbolists and Parnassians in their use of daring metaphors and innovative metres, and they used sensuous imagery to express their own highly individual spiritual values. The principal members of the movement were, besides Darío, the poets Antonio Machado and Juan Ramón Jiménez and the novelist and playwright Ramón María del Valle-Inclán.

The first phase of Modernismo was marked by the establishment of the periodical La Revista Azul (1894–96) in Mexico. Darío traveled widely at this time, promoting Modernismo in Spain during stays in 1892 and 1898 and throughout Latin America. A second important Modernismo periodical, La Revista Moderna (1898–1911), was also founded in Mexico. While Modernismo as a movement ended by 1920, its influence continued well into the 20th century in both poetry and prose.