Ernesto is an unfinished novel by Umberto Saba (1883–1957), written in 1953 and published posthumously in 1975. It was his only work of fiction. It was largely autobiographical, including details about the title character's friendship and love for a violinist, and his attachment to his native Trieste. As one critic says: "he revisited not only the scenes but also the moods of his puberty". A screenplay freely adapted from the novel served as the basis for an Italian-language film of the same name in 1979.