Giovanni Carlo Maria Clari (27 September 1677 – 16 May 1754) was an Italian musical composer and maestro di cappella (chapel-master) at Pistoia. He was born at Pisa. He gained his initial grounding in musical education from his father, a violinist originally from Rome who was employed in the service of the church of the Cavalieri di S. Stefano in Pisa. Clari was the most celebrated pupil of Colonna, maestro di cappella of S. Petronio, at Bologna. He became maestro di cappella at Pistoia about 1712, at Bologna in 1720, and at Pisa in 1736. He is supposed to have died about 1754.