Don Antonio María Suñol was a Spanish-born Californio businessman, ranchero, and politician. Suñol served two terms as Alcalde of San José (mayor) and was one of the largest landowners in the Bay Area. He is the namesake of the town of Sunol and the founder of Willow Glen, an affluent neighborhood of San Jose.

Sunol is an unincorporated area and census-designated place in Alameda County, California. Located in the Sunol Valley of the East Bay, the population was 913 at the 2010 census. It is best known as the location of the Sunol Water Temple and for its historic tourist railroad system, the Niles Canyon Railway.