| Order: | 78th Doge of the Republic of Genoa |
| Term Start1: | November 27, 1591 |
| Term End1: | November 26, 1593 |
| Predecessor1: | Battista Negrone |
| Successor1: | Antonio Grimaldi Cebà |
| Birth Date: | 1538 |
| Birth Place: | Genoa, Republic of Genoa |
| Death Date: | 1613 |
| Death Place: | Genoa, Republic of Genoa |
Giovanni Agostino Giustiniani Campi (Genoa, 1538 - Genoa, 1613) was the 78th Doge of the Republic of Genoa.
His election as doge on November 27, 1591, according to the Genoese annals, was not somewhat shared among the representatives of the Grand Council so much so that the new doge Giovanni Agostino Giustiniani Campi was elected with a low number of votes in his favor. After the end of his mandate, Giustiniani Campi still held various state positions until his death in Genoa in 1613.