He was elected by the Grand Council of 1 August 1703, the ninety-second doge of the Republic of Genoa in two-year succession and the one hundred and thirty-seventh in republican history.

As doge he was also invested with the related biennial office of king of Corsica.

After the dogate ended on 1 August 1705, Antonio Grimaldi continued to serve the Genoese state.

He died in Genoa during 1717 without ever marrying and without children.

This article about an Italian politician is a stub.