Ulua

Ulua may refer to:


 * Ulúa River
 * San Juan de Ulúa, 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 (Caranx ignobilis), but not in genus Ulua proper
 * Ulua people, an indigenous people of El Salvador and Nicaragua.