In the Papal States, Cardinal Michelangelo dei Conti is elected Pope, and takes the name Innocent XIII.

The Papal States, officially the State of the Church, were a conglomeration of territories on the Italian peninsula under the direct sovereign rule of the pope from 756 to 1870. They were among the major states of Italy from the 8th century until the unification of Italy, which took place between 1859 and 1870, culminated in their demise.

The 1721 papal conclave was called upon the death of Pope Clement XI. It began on 31 March 1721 and ended on 8 May that year with the election of Cardinal Michelangelo dei Conti as Pope Innocent XIII.

The pope is the bishop of Rome and the visible head of the worldwide Catholic Church. He is also known as the supreme pontiff, Roman pontiff, or sovereign pontiff. From the 8th century until 1870, the pope was the sovereign or head of state of the Papal States, and since 1929 of the much smaller Vatican City state. From a Catholic viewpoint, the primacy of the bishop of Rome is largely derived from his role as the apostolic successor to Saint Peter, to whom primacy was conferred by Jesus, who gave Peter the Keys of Heaven and the powers of "binding and loosing", naming him as the "rock" upon which the Church would be built. The current pope is Leo XIV, who was elected on 8 May 2025 on the second day of the 2025 papal conclave.

Pope Innocent XIII, born as Michelangelo dei Conti, was head of the Catholic Church and ruler of the Papal States from 8 May 1721 to his death in March 1724. He remains the most recent pope to take the pontifical name "Innocent".