Ulloa

Ulloa is a surname of Spanish origin that is common in Spain and in many Spanish-speaking countries of the Americas. It is generally considered to be toponymic, arising from a place name in the Galicia region of northwestern Spain. Over the centuries, bearers of the name spread through the Iberian Peninsula and to the territories of the Spanish Empire, where the name became established in colonial societies and today appears across various countries.

Notable individuals bearing the surname include Antonio de Ulloa (1716–1782), a Spanish scientist, explorer, and administrator. He participated in early scientific and geodetic expeditions to measure meridian lengths and to study the Americas, and he later held ceremonial and administrative roles within the Spanish empire, including a brief period as governor of Louisiana after its transfer from France. Ulloa’s work contributed to the European understanding of geography, natural history, and science during the 18th century.

In addition to individuals, the surname Ulloa appears in toponymy and cultural references. It is used in the names of places, streets, and institutions in regions with historical Spanish influence, often carried forward in honor of people who bore the surname. The name continues to be dispersed widely due to migration and historical settlement patterns.

See also: Ulloa (surname).