Mariano Rampolla del Tindaro was an Italian Cardinal in the Roman Catholic Church, and the last man to have his candidacy for papal election vetoed through jus exclusivae by a Catholic monarch.

Jus exclusivae was the right claimed by several Catholic monarchs of Europe to veto a candidate for the papacy. Although never formally recognized by the Catholic Church, the monarchs of France, Spain and Austria claimed this right at various times, making known to a papal conclave, through a crown-cardinal, that the monarch deemed a particular candidate for the papacy objectionable.