Ulloa, Antonio de, 1716-95, Spanish scientist and naval officer. As a young man he went to Peru with a scientific expedition, remaining in the country from 1736 to 1744; the result was an account of the people and the country published in 1748. The book was translated into English as A Voyage to South America (1758, 5th ed. 1807). Sent to New Orleans (1766) as governor of Louisiana after that province had been ceded by France to Spain, he was harassed in his administration by the rebellious attitude of the French colonists and by inadequate military and financial support. After an uprising in 1768 he was forced to leave.

Ulloa, Francisco de, d. c.1540, Spanish explorer in Mexico. Against the orders of Viceroy Antonio de Mendoza, Hernán Cortés sent Ulloa to explore the Gulf of California. In 1538-39 he sailed to the head of the gulf, thus proving that lower California was a peninsula.

Ulloa may refer to:

Places

• the municipality Ulloa in Colombia
• the region A Ulloa in Galicia

Persons

• the football player Fabio Ulloa
• the accordionist Francisco Ulloa
• the former president of Nicaragua Hilario Ulloa
• the Chilean long-distance runner Emilio Ulloa
• the Argentine football player Jose Leonardo Ulloa
• the Peruan Miss World candidate Cynthia Jessenia Calderon Ulloa
• the discoverer Francisco de Ulloa
• the general and scientist Antonio de Ulloa
• the Spanish actor Tristán Ulloa