Giacomo Boni (28 April 1688 – 7 January 1766) was an Italian painter of the late-Baroque period, active mainly in Genoa.

He returned and followed Franceschini to Genoa, then Crema, Piacenza, Lavino di Mezzo, Parma, and then Rome.

He painted canvases for chapels in the church of San Filippo Neri in Genoa, and frescoes for their oratory chapter house.

He also painted in the Palazzo Mari and in many others; and frescoed the vault of the oratory of Santa Maria della Costa, at Sanremo.

Lanzi speaks of Jacopo Boni working as an assistant to Franceschini in decorating the great hall of the Palazzo Pubblico.