Duke of Béjar (Spanish: Duque de Béjar) is a hereditary title in the Peerage of Spain, accompanied by the dignity of Grandee and granted in 1485 by the Catholic Monarchs to Álvaro de Zúñiga, 1st Duke of Plasencia and chief justice of Castile.

[2][3] The title refers to the town of Béjar in Salamanca, Spain.