List of wars involving Uruguay

This is a list of wars involving the Oriental Republic of Uruguay from 1825 to the present.

Conflict	Combatant 1	Combatant 2	Results	Notable battles
Siege of Colonia del Sacramento (1704 - War of the Spanish Succession)	Buenos Aires	Kingdom of Spain	Victory: Spanish forces of the Portuguese colonial abandoned Colonia del Sacramento
Anglo-Spanish War (1796 –1808)	Spain	United Kingdom	Spanish victory	Battle of Cardal (1807) Battle of Montevideo (1807)
Second Banda Oriental campaign (1812-1814)	Spanish Empire	United Provinces of the Río de la Plata	United Provinces of the Río de la Plata victory	Battle of Las Piedras (1811) Siege of Montevideo (1811) Siege of Montevideo (1812–1814) Battle of Cerrito (1812) Battle of Buceo (1814)
Portuguese conquest of the Banda Oriental (1816–1820)	United Kingdom of Portugal, Brazil and the Algarves	Federal League	Luso-Brazilian victory	Battle of India Muerta (1816) Battle of Sauce (1816) Battle of Arapey (1817) Battle of Catalán (1817) Battle of Paso Cuello (1817) Battle of Arroyo Grande (1818) Battle of Tacuarembó (1820)
War of Independence of Brazil (1822 - 1825)	Kingdom of Portugal	Empire of Brazil	Brazilian victory Treaty of Rio de Janeiro	Siege of Montevideo (1823) Battle of Montevideo (1823)
Cisplatine War (1825–1828)	Río de la Plata Thirty-Three Orientals	Brazil	Stalemate Independence of the Republic of Uruguay	Battle of Sarandí (1825) Battle of Colonia del Sacramento (1826) Battle of Juncal (1827)
Uruguayan Civil War (1839–1852)	Colorados Unitarians Brazil Entre Ríos Corrientes France United Kingdom	Blancos Argentina Federalists	Colorado victory Imposition of the Colorados in Uruguay	Great Siege of Montevideo (1843 – 1851)
Platine War (1845–1852)	Brazil Uruguay Paraguay Argentine Rebels	Argentina	Victory Argentine clout over the Platine region ends Brazilian hegemony in the Platine region
Uruguayan War (1864–1865)	Uruguay Blancos Federalists	Brazil Colorados Unitarians Argentina	Defeat Colorados takeover, regime change in Uruguay
Paraguayan War (1864–1870)	Brazil Argentina Uruguay	Paraguay	Victory Allied occupation of Paraguay
Revolution of the Lances (1870–1872)	Colorados	Blancos	Blanco victory Agreement of power-sharing reached
Revolution of 1904 (1904)	Colorados	Blancos	Colorado victory Death of Aparicio Saravia Blanco revolutionaries stop fighting
World War II (1945)	United States Soviet Union United Kingdom China France Poland Canada Australia New Zealand India South Africa Yugoslavia Greece Denmark Norway Netherlands Belgium Luxembourg Czechoslovakia Brazil Mexico Chile Bolivia Colombia Ecuador Paraguay Peru Venezuela Uruguay Argentina	Germany Japan Italy Hungary Romania Bulgaria Croatia Slovakia Finland Thailand Manchukuo Mengjiang	Victory Collapse of the German Reich Fall of Japanese and Italian Empires Creation of the United Nations Emergence of the United States and the Soviet Union as superpowers Beginning of the Cold War
Internal War in Uruguay (1963-1974)	Uruguay	MLN-T OPR-33 MRO	Victory The Civic-military dictatorship succeeds in arresting all guerrillas.