Darío de Regoyos y Valdés was a Spanish painter. He was notable for contributing to "the renewal of modern Spanish painting". A student of Carlos de Haes at the Real
Academia de Bellas Artes de San Fernando in 1878 he studied at the Académie Royale des Beaux-Arts and in Brussels. He traveled extensively in the 1880s, accompanied by his friend, the painter Adolfo Guiard. He was a member of the art group L'Essor and a founding member of Les XX with the Belgian avant-garde scene. During these experiences he gained a significant influence from Impressionist and Neo-Impressionist painters.
His works include El paseo de Alderdi Eder, Penaas de Duranguesado, La Espana Negra:Victimas de la fiesta, Mercado de Villarnaca de Oria, Gallinero and Polluelos. Though his work was not very popular during his lifetime, after his death, a tribute exhibition was devoted to him in the Biblioteca Nacional de España in Madrid. Collections of his art are held by the Bilbao Fine Arts Museum, the Museu Nacional d'Art de Catalunya in Barcelona, Abelló Museum in Vallès Oriental, and the Carmen Thyssen Museum in Málaga. He died 1913 and was buried in the Sant Gervasi Cemetery, Barcelona.