The Invasion of Portugal may refer to several invasions of Portugal including one of the following events:
Spanish invasion of Portugal during the War of the Portuguese Succession (1580) Spanish invasion of Portugal (1762), part of the Seven Years' War 1801 Invasion of Portugal by Spanish forces in the War of the Oranges Invasion of Portugal (1807), by Spanish and French forces as part of the Peninsular War 1809 Invasion of Portugal by French forces, defeated at the Battle of Porto 1810 Invasion of Portugal by French forces, frustrated by the Lines of Torres Vedras Portuguese colonization of the Americas