Thomas Philip O'Neill
Known For
Acting
Details
Known For
Acting
Thomas Philip O'Neill's LGBTQ+ Titles
Mapplethorpe
David Croland
Acting (9)
2025
Writer's Block as Matthew
2024
The School Duel as Pastor Mark
2019
Mapplethorpe as David Croland
2018
FBI as Dr. Neil Mosbach (4 episodes)
2018
FBI as Neil Mosbach (13 episodes)
2017
MINDHUNTER as Leo Buchanan (1 episode)
2015
Black Mass as FBI Wire Tech
2014
NCIS: New Orleans as Eddie Oberman (1 episode)
1999
Law & Order: Special Victims Unit as Rick Donnelly (1 episode)