Pope Clement X (Latin: Clemens X), born Emilio Bonaventura Altieri, was Pope from 29 April 1670 to his death in 1676.
On 29 April 1670, the papacy was offered to him by fifty-nine Cardinals present at the election; only two being against him. He, however, objected because of his age, for he was almost eighty, and exclaimed, "I am too old to bear such a burden." Pointing to Cardinal Brancaccio, Altieri said he was the Cardinal whom they ought to elect. He persisted in refusing, protesting that he no longer had strength or memory; eventually, with tears he accepted, and out of gratitude to his benefactor, by ten years his junior, he assumed the name of Clement X. He was crowned on 11 May.
On 22 July 1676, the agonies of the gout became so violent that Clement X died under them. He was eighty-six years old, and had governed the Church six years, two months, and twenty-four days. His tomb is in St. Peter's Basilica.