Welcome to the Academic Homepage of
Tomás O'Sullivan, PhD
former Assistant Professor of Theological Studies at
From 2011 to 2016, I was an Assistant Professor
in the Department of Theological Studies
at Saint Louis University.
I am a Historian and Theologian,
specializing in Early Medieval Christianity,
and enjoy teaching at both the undergraduate
and graduate levels.
Please feel free to browse this site to find out
more about my research and teaching, or contact me at
with any inquiries.