Avendaño is a Spanish surname. It is believed to have originated in Galicia, then passed to the Basque Country, and later spread to other areas of Spain and to Latin America. It may refer to:
Manuel Avendaño, MTV/Billboard celebrity artist, actor, executive director/producer, songwriter and entrepreneur.Dr. Diego Núñez de Avendaño, Peruvian 16th century judge and, briefly, viceroy of PeruDiego de Avendaño, Spanish-Peruvian 17th century Jesuit academicFernando Avendaño, Peruvian 17th century priestGuillermo Flores Avendaño, President of Guatemala briefly in 1957-58Hugo Avendaño, Mexican singer and actorJorge Avendaño, Mexican pianist, composer, songwriter and music producerJuan Avendaño, Spanish tennis playerJuan Pablo Avendaño, Argentine footballerManuel Avendaño, Chilean footballerNazareth Avendaño, Costa Rican diplomatPedro de Avendaño, Spanish conquistadorPedro Medina Avendaño, Colombian poetSerafín Avendaño, Spanish painterVíctor Avendaño, Argentine boxerSantiago Avendaño, Argentine polo playerBenjamin Avendaño, Argentine polo playerJoaquin Avendaño, Argentine polo playerGonzalo Avendaño, Argentine polo player