The Italian Mathematical Union is a mathematics society based in Italy. It was founded on December 7, 1922 by Luigi Bianchi, Vito Volterra, and most notably, Salvatore Pincherle, who became the Union's first President. The Union's journal Bollettino dell'Unione Matematica Italiana contains two sections: one for research papers and one for expository articles. The Union and the Society for Industrial and Applied Mathematics (Società Italiana di Matematica Applicata e Industriale) are running the Italian digitization project bdim: Biblioteca Digitale Italiana di Matematica.