1780 in Portugal
# 1780 in Portugal

Events in the year 1780 in Portugal.

## Incumbents

* Monarch: Mary I

## Events

* 16 January – Battle of Cape St. Vincent, a naval battle off the southern coast of Portugal during the Anglo-Spanish War. A British fleet defeated a Spanish squadron.

## Births

* 10 May – José Homem Correia Teles, judge and politician (d. 1849).
* 20 May – José Bernardino de Portugal e Castro, marquis (d. 1840)
* 12 July – Mouzinho da Silveira, statesman, jurist and politician (d. 1849)

## Deaths

* 18 January – Gaspar of Braganza, Archbishop of Braga (b. 1714)
* 23 October – João da Bemposta (b. 1726)

### Full date missing

* Abade António da Costa, composer (b. 1714)
* Miguel António do Amaral, court painter (b. 1710)
