Dom Miguel I (English: Michael I; 26 October 1802, Lisbon – 14 November 1866, Bronnbach, Grand Duchy of Baden), is the King of Portugal between 1828 and 1834, the seventh child and third son of King João VI (John VI) and his queen, Carlota Joaquina of Spain.

Following his exile as a result of his actions in the Abrilada, Miguel returns to Portugal as regent to his niece Queen Maria II of Portugal, and potential royal consort.

As regent, he claims the Portuguese throne in his own right, since according to the so-called Fundamental Laws of the Kingdom his older brother Pedro IV and therefore the latter's daughter had lost their rights from the moment that Peter had made war on Portugal and become the sovereign of a foreign state (Brazilian Empire).

This leads to a difficult political situation, during which many people are killed, imprisoned, persecuted or sent into exile, and which culminate in the Portuguese Liberal Wars between authoritarian absolutists and progressive constitutionalists.

In the end, Miguel is forced from the throne and lives the last 32 years of his life in exile.