1815 in Portugal

Incumbents

• Monarch: Mary I

Events

• 26 December – Count of Barca, title created

Births

• 11 February – João Afonso da Costa de Sousa de Macedo, 1st Duke of Albuquerque.
• 1 August – José Carlos O'Neill, titular head of the Clanaboy O'Neill dynasty

Deaths

• Carlos Amarante, engineer and architect