← 1819 1818 1817 1820 in Portugal → 1821 1822 1823
Centuries:	17th 18th 19th 20th 21st
Decades:	1800s 1810s 1820s 1830s 1840s
See also:	List of years in Portugal

Events in the year 1820 in Portugal.

Incumbents

• Monarch: John VI

Events

• 22 January – Battle of Tacuarembó
• Liberal Revolution^[1]
• 24 August – Military revolt in Porto^[1]
• Establishment of a provisional junta of the Supreme Government of the Kingdom, in Porto^[1]
• 15 September – Military revolt in Lisbon^[1]
• Establishment of an interim government, in Lisbon^[1]
• 28 September – Establishment of a unified provisional junta^[1]
• 22 November – Instruções, first election law^[1]
• December – Cortes election^[1]

References