| Order: | 173rd Doge of the Republic of Genoa |
| Term Start1: | January 26, 1773 |
| Term End1: | January 26, 1775 |
| Predecessor1: | Ferdinando Spinola |
| Successor1: | Brizio Giustiniani |
| Birth Date: | August 12, 1715 |
| Birth Place: | Genoa, Republic of Genoa |
| Death Date: | January 4, 1791 |
| Death Place: | Genoa, Republic of Genoa |
Pier Francesco Grimaldi (Genoa, 12 August 1715 - Genoa, 4 January 1791) was the 173rd Doge of the Republic of Genoa.
Grimaldi became doge when Ferdinando Spinola renounced his position of doge. The election took place on January 26, 1773. The suppression of the Society of Jesus was imposed during his Dogate, to which the doge and a large part of the Genoese aristocracy were in favor. For this reason Pier Francesco Grimaldi delayed the execution of this order, in agreement with the Jesuit archbishop of Genoa. With pontifical permission he also restricted the right of immunity of churches for outlaws. The dogate ended on January 26, 1775, and Grimaldi continued to work for the Republic. He died in 1791.[1] [2]