Introductory Note to the First Epistle of Clement to the Corinthians
- From Ante-Nicene Fathers (American edition), vol. 1. About St. Clement of Rome and his genuine epistle.
- http://www.ccel.org/ccel/schaff/anf01.ii.i.html

Clemens Romanus
- Article on Clement's life and his writings, genuine and spurious, by G. Salmon. The HTML is legible, but the "image" version (PNG files) is preferable.
- http://www.ccel.org/ccel/wace/biodict/Page_171.html

New Schaff-Herzog Encyclopedia of Religious Knowledge: Clement of Rome
- Article by G. Uhlhorn on Clement's life and the writings ascribed to him. Includes extensive bibliography. Requires ability to view PNG files.
- http://www.ccel.org/ccel/schaff/encyc03/Page_139.html

Clement I
- Brief information on Clemens Romanus, first-century bishop. A consideration of his letter. Then returns to what can be said of the man, based on his letter. In the 1911 Encyclopædia Britannica.
- http://encyclopedia.jrank.org/CHR_CLI/CLEMENT_I.html

Clement I, Pope
- Illustrated hagiography.
- http://www.saintpatrickdc.org/ss/1123.htm#clem

The Ecole Glossary: Clement of Rome
- Short article on the saint, by Heidi Boener.
- http://www2.evansville.edu/ecoleweb/glossary/clementr.html

S. Baring-Gould: Pope St. Clement I
- Biography, from S. Baring-Gould's 1914 book "Lives of the Saints."
- http://www.catholic.org/saints/saint.php?saint_id=37

The First Epistle of Clement
- Speculation on the dating of 1 Clement and therefore its author, links.
- http://www.earlychristianwritings.com/1clement.html

Clement I, Saint
- Succinct biography in The Columbia Encyclopedia, 6th ed.
- http://www.bartleby.com/65/cl/Clement1St.html

St Clement, Pope, Martyr
- From Fr. Alban Butler's Lives of the Saints.
- http://www.ewtn.com/library/MARY/CLEMENT.htm

Catholic Encyclopedia: Pope St. Clement I
- Lengthy article on Clement I, also called Clemens Romanus, the fourth pope and the first of the Apostolic Fathers.
- http://www.newadvent.org/cathen/04012c.htm

Clement of Rome, Bishop
- Short biography. With prayer in traditional (Anglican) and contemporary language.
- http://elvis.rowan.edu/~kilroy/JEK/11/23.html

St. Clement I
- Biographical profile, from "Popes Through the Ages."
- http://www.cfpeople.org/Books/Pope/POPEp4.htm

Pope Clement I
- Profile of this saint, also known as Clement of Rome. Accepts the tradition that he was martyred in 101. Illustrated.
- http://www.catholic-forum.com/saints/saintc14.htm

Catholic Information Network: Pope St. Clement I
- Hagiographical essay.
- http://www.cin.org/clementi.html