Encyclopædia Britannica: Innocent I
- Concise article on the early fifth-century pope, in the 11th edition (1911).
- http://encyclopedia.jrank.org/I27_INV/INNOCENT_I.html

Catholic Online: St. Innocent I
- Biographical paragraph.
- http://www.catholic.org/saints/saint.php?saint_id=678

Popes Through the Ages: St. Innocent I
- Short biography, by Joseph Brusher.
- http://www.cfpeople.org/Books/Pope/POPEp40.htm

The Ecole Glossary: Innocent I
- Brief biography, by Karen Rae Keck.
- http://www2.evansville.edu/ecoleweb/glossary/innocenti.html

Pope Innocent I
- Unanimously chosen to succeed Anastasius. Essay on his writings and some of the more notable events of his pontificate. Innocent died in 417.
- http://www.newadvent.org/cathen/08011a.htm