Skip to main content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
John M. Kelly Library Research Guides

Ecclesiastical Latin

Welcome to the Kelly Library Research Guide to Ecclesiastical Latin.


For hundreds of years, the majority of Christian theological texts were written in Latin.  Even today, the official editions of most Catholic liturgical works are published first in Latin before being translated into other languages.

Ecclesiastical Latin differs somewhat from classical Latin: it has developed its own specialized vocabulary, and sometimes uses grammatical or spelling variants.

This guide highlights some useful resources for students of ecclesiastical Latin.