Don Pedro Carlos (Pedro Carlos Antonio Rafael José Javier Francisco Juan Nepomuceno Tomás de Villanueva Marcos Marcelino Vicente Ferrer Raimundo; 18 June 1786 – 4 July 1812) was an Infante of Spain and Portugal.

His father, a very intelligent man, was King Charles III's favorite son, but he and his wife died in 1788 of smallpox.

In 1792 his grandmother was officially declared insane and her son John, uncle of Pedro Carlos, became Regent of Portugal.

In Brazil Pedro Carlos was engaged to his cousin Maria Teresa, Princess of Beira, daughter of Carlota Joaquina of Spain and John VI of Portugal, and they married on 13 May 1810 in Rio de Janeiro.

[1] The couple was very happy during their two years of marriage, after which Pedro Carlos became ill and died in Quinta da Boa Vista on 4 July 1812.