a male given name from Latin, equivalent to English Ulysses; Odysseus (in some translations of Homer's Odyssey); the letter U in the Spanish spelling alphabet
Union of South Africa (former official name of South Africa: a country in Southern Africa; used from 1910 to 1961, when the country was a Commonwealth dominion under nominal British sovereignty)
Union of Soviet Socialist Republics (a former transcontinental country in Europe and Asia (1922–1991), now split into Russia and 14 other countries; short form Unión Soviética; abbreviation URSS)