Giulio Pittarelli (3 February 1852, Campochiaro, Campobasso â 2 March 1934, Rome) was an Italian mathematician, specializing in descriptive geometry and algebraic geometry.
Pittarelli received from the University of Naples his laurea in mathematics in 1874 and in engineering in 1876. For many years he was a professor of descriptive geometry at the Sapienza University of Rome. In addition to his mathematical career, he was a painter, an excellent pianist, and an author, who wrote a biography of Luigi Cremona.
Pittarelli was an invited speaker of the International Congress of Mathematicians in 1908 in Rome.