Anton Giulio Barrili (14 December 1836 in Savona – 14 August 1908 in Carcare) was an Italian novelist. He was educated for the legal profession, which he abandoned in Genoa for journalism. He was a volunteer in the campaign of 1859 and served with Garibaldi in 1866 (Austro-Prussian War, Third Italian War of Independence) and 1867. From 1865 onwards he published a large number of books of fiction, which had wide popularity, his work being commonly compared with that of Victor Cherbuliez.

Some of the best of the later ones are Santa Cecilia (1866), Come un sogno (1875), and L'olmo e l'edera (1877). His Raggio di Dio appeared in 1899. Barrili also wrote two plays and various volumes of criticism, including Il rinnovamento letterario italiano (1890). He was elected to the Italian chamber of deputies in 1876; and in 1889 became professor of Italian literature at the University of Genoa.