Pope Clement I (Latin: Clemens Romanus; Greek: Κλήμης Ῥώμης), also known as Saint Clement of Rome, is listed by Irenaeus and Tertullian as Bishop of Rome, holding office from 88 to his death in 99. He is considered to be the first Apostolic Father of the Church.
Few details are known about Clement's life. Clement was said to have been consecrated by Saint Peter, and he is known to have been a leading member of the church in Rome in the late 1st century. Early church lists place him as the second or third bishop of Rome after Saint Peter. The Liber Pontificalis presents a list that makes Pope Linus the second in the line of bishops of Rome, with Peter as first; but at the same time it states that Peter ordained two bishops, Linus and Pope Cletus, for the priestly service of the community, devoting himself instead to prayer and preaching, and that it was to Clement that he entrusted the Church as a whole, appointing him as his successor. Tertullian considered Clement to be the immediate successor of Peter. In one of his works, Jerome listed Clement as "the fourth bishop of Rome after Peter", and added that "most of the Latins think that Clement was second after the apostle". Clement is put after Linus and Cletus/Anacletus in the earliest (c. 180) account, that of Irenaeus, who is followed by Eusebius of Caesarea.
Clement's only genuine extant writing is his letter to the church at Corinth (1 Clement) in response to a dispute in which certain presbyters of the Corinthian church had been deposed. He asserted the authority of the presbyters as rulers of the church on the ground that the Apostles had appointed such. His letter, which is one of the oldest extant Christian documents outside of the New Testament, was read in church, along with other epistles, some of which later became part of the Christian canon. These works were the first to affirm the apostolic authority of the clergy. A second epistle, 2 Clement, was attributed to Clement, although recent scholarship suggests it to be a homily by another author. In the legendary Clementine Literature, Clement is the intermediary through whom the apostles teach the church. According to tradition, Clement was imprisoned under the Emperor Trajan; during this time he is recorded to have led a ministry among fellow prisoners. Thereafter he was executed by being tied to an anchor and thrown into the sea.
Clement is recognized as a saint in many Christian churches and is considered a patron saint of mariners. He is commemorated on 23 November in the Roman Catholic Church, the Anglican Communion, and the Lutheran Church. In Eastern Orthodox Christianity his feast is kept on 24 or 25 November.