Pedro Fernández de Castro (disambiguation)

Pedro Fernández de Castro may refer to:
 * Pedro Fernández de Castro (Grand Master of the Order of Santiago)
 * Pedro Fernández de Castro (died 1214), Castilian nobleman
 * Pedro Fernández de Castro (died 1342) was a Galician nobleman and military leader.
 * Pedro Fernández de Castro, Count of Lemos, 17th-century nobleman