Giovanni Girolamo Kapsperger (also: Johann(es) Hieronymus Kapsberger or Giovanni Geronimo Kapsperger; c. 1580 – 17 January 1651) was a German-Italian virtuoso performer and composer of the early Baroque period. A prolific and highly original composer, Kapsberger is chiefly remembered today for his lute and theorbo (chitarrone) music, which was seminal in the development of these as solo instruments.