Luigi Antonio Sabbatini (1732, Albano Laziale, Italy – January 29, 1809, Padova, Italy) was an Italian composer and music theorist. He studied music at Bologna in the Franciscan Monastery, under Father Giovanni Battista Martini. He published a textbook on the theoretical elements of music, in 1789, in three volumes, a treatise on fugues, in 1802. He also contributed to the use of numerical signatures of musical harmony. In May 1807, he was elected to the Accademia Italiana.[1]