Pedro Fernández de Castro
Pedro Fernández de Castro is the name of the following people:
- Pedro Fernández de Castro y Andrade (1560–1622), Spanish nobleman
- Pedro Fernández de Castro el Castellano (around 1155–1214), Castilian nobleman
- Pedro Fernández de Castro el de la Guerra († 1342), Galician nobleman
- Pedro Antonio Fernández de Castro (1632–1672), Spanish nobleman, viceroy of Peru