Pietro Tagliavia d'Aragonia (died 1558) was an Italian Roman Catholic bishop and cardinal.
1500, the son of Giovanni Vincenzo Tagliavia, count of Castelvecchio and Beatrice d'Aragonia e Cruillas.
[1] Pope Julius III made him a cardinal priest in the consistory of December 22, 1553.
[1] He was not a participant in the papal conclave of April 1555 that elected Pope Marcellus II, but he did participate in the papal conclave of May 1555 that elected Pope Paul IV.
[1] He received the red hat and the titular church of San Callisto on July 17, 1555.