Ulua may refer to:
*
Ulúa River
The Ulúa River ( es, Río Ulúa, ) is a river in western Honduras. It rises in the central mountainous area of the country close to La Paz and runs approximately due northwards to the east end of the Gulf of Honduras at . En route, it is join ...
*
San Juan de Ulúa
San Juan de Ulúa, also known as Castle of San Juan de Ulúa, is a large complex of fortresses, prisons and one former palace on an island of the same name in the Gulf of Mexico overlooking the seaport of Veracruz, Mexico. Juan de Grijal ...
, a complex located on an island of the same name in the Gulf of Mexico
*
USS ''Ulua'' (SS-428), a submarine of the United States Navy
*
''Ulua'' (fish), a genus of fishes in the family Carangidae
* vernacular name of the species
giant trevally
The giant trevally (''Caranx ignobilis''), also known as the lowly trevally, barrier trevally, ronin jack, giant kingfish or ''ulua'', is a species of large marine fish classified in the jack family, Carangidae. The giant trevally is distributed ...
(''Caranx ignobilis''), but not in genus ''Ulua'' proper
*
Ulua people, an indigenous people of
El Salvador
El Salvador (; , meaning " The Saviour"), officially the Republic of El Salvador ( es, República de El Salvador), is a country in Central America. It is bordered on the northeast by Honduras, on the northwest by Guatemala, and on the south by ...
and
Nicaragua
Nicaragua (; ), officially the Republic of Nicaragua (), is the largest Sovereign state, country in Central America, bordered by Honduras to the north, the Caribbean Sea, Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to ...
.
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