Gioacchino Di Marzo (2 December 1839 – 4 April 1916) was an Italian art historian, librarian and Jesuit.

He was librarian to the Comunale di Palermo as well as a historiographer and one of the founders of modern Sicilian art history.

He translated Vito Amico's Lexicon topographicum in 1855, also writing a commentary to it.

From 1858 to 1864 he published his four volume Delle Belle Arti in Sicilia dai Normanni alla fine del sec.

He died in Palermo in 1916, the same year as Giuseppe Pitrè and Salvatore Salomone Marino, two other major Sicilian cultural figures.