1820 in Portugal
Events in the year 1820 in Portugal.
Incumbents
Events
- 22 January – Battle of Tacuarembó
- Liberal Revolution
- 24 August – Military revolt in Porto
- Establishment of a provisional junta of the Supreme Government of the Kingdom, in Porto
- 15 September – Military revolt in Lisbon
- Establishment of an interim government, in Lisbon
- 28 September – Establishment of a unified provisional junta
- 22 November – Instruções, first election law
- December – Cortes election