Anastasius I, Pope
- Short hagiography.
- http://www.saintpatrickdc.org/ss/1219.htm

Pope Anastasius I
- Short account of his pontificate, by Karen Rae Keck.
- http://www2.evansville.edu/ecoleweb/glossary/anastasiusi.html

St. Anastasius I
- Short biography, from the book "Popes Through the Ages" by Joseph Brusher.
- http://www.cfpeople.org/Books/Pope/POPEp39.htm#T1

Pope St. Anastasius I
- Article on the pope remembered chiefly for condemning Origenism, d. 401. From the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/01454c.htm