Giuseppe Maria Jacchini (16 July 1667[1] in Bologna – 2 May 1727) was an Italian cellist and composer.
Jacchini received his musical training as a choirboy in the San Petronio Basilica in Bologna.
Later Jacchini became a cellist in the "cappella musicale" of the San Petronio Basilica.
He composed mainly instrumental music with cello, violin, and keyboard continuo.
He dedicated his opus 4 to Bolognese Count and composer Pirro Albergati, who had campaigned for Jacchini's permanent position in the orchestra of the cathedral of Bologna.