Pedro Fages (1734–1794) was a Spanish soldier, explorer, first Lieutenant Governor of the province of the Californias under Gaspar de Portolá. Fages claimed the governorship after Portolá's departure, acting as governor in opposition to the official governor Felipe de Barri, and later served officially as fifth (1782–91) Governor of the Californias.

The Portolá expedition was a Spanish voyage of exploration in 1769–1770 that was the first recorded European exploration of the interior of the present-day California. It was led by Gaspar de Portolá, governor of Las Californias, the Spanish colonial province that included California, Baja California, and other parts of present-day Mexico and the United States. The expedition led to the founding of Alta California and contributed to the solidification of Spanish territorial claims in the disputed and unexplored regions along the Pacific coast of North America.