1857 in Portugal

Incumbents

• Monarch: Peter V
• Prime Minister: Nuno José Severo de Mendoça Rolim de Moura Barreto, 1st Duke of Loulé

Births

• 6 March - Manuel Maria Coelho, military officer and politician.
• 5 May - António Teixeira de Sousa, medical doctor and politician.
• 7 May - Fialho de Almeida, writer and journalist.