The Grimaldi Ministry was a Spanish government headed by Jerónimo Grimaldi which lasted between 9 October 1763 and 19 February 1777. Following Spain's disastrous performance in the Seven Years' War, Grimaldi was tasked with pushing through reforms of the navy, army, public finances and colonial administration system which he did with some success. His government was packed with reforms known as Grillos, many of whom wanted to remodel the Spanish state to closer resemble that of Britain.
In 1777 he was dismissed by Charles III and made Spanish Ambassador to Rome. He was replaced by the Floridablanca Ministry which served from 1777 to 1792.
| First Secretary of State (PM) | Jerónimo Grimaldi | 9 October 1763 – 19 February 1777 | |
| Secretary of State for War | |||
| Secretary of State for Grace and Justice | Alonso Muñiz y Caso Osorio | 9 October 1763 – 16 January 1765 | |
| Manuel de Roda y Arrieta | 16 January 1765 – 19 February 1777 | ||
| Secretary of State for the Treasury | Marquess of Esquilache | 9 October 1763 – 1 April 1766 | |
| Miguel de Múzquiz y Goyeneche | 1 April 1766 – 19 February 1777 | ||
| Secretary of the State for Navy | Julián de Arriaga y Ribera | 9 October 1763 – 28 January 1776 | |
| Pedro González de Castejón | 28 January 1776 – 19 February 1777 | ||
| Secretary of State for Indies | Julián de Arriaga y Ribera | 9 October 1763 – 28 January 1776 | |
| Marquess of Sonora | 28 January 1776 – 19 February 1777 |