Acting
Thomas Philip O'Neill
Known for
Highlights
Law & Order: Special Victims Unit
1999 · Series · Rick Donnelly
MINDHUNTER
2017 · Series · Leo Buchanan
FBI
2018 · Series · Neil Mosbach
Black Mass
2015 · Film · FBI Wire Tech
Law & Order
1990 · Series · Dr. Neil Mosbach
NCIS: New Orleans
2014 · Series · Eddie Oberman
Filmography
Movies
6 films
The Mix
2026 · Film · Sean Palermo
Writer's Block
2025 · Film · Matthew
The School Duel
2024 · Film · Pastor Mark
Endless Sea
2022 · Film
Mapplethorpe
2019 · Film · David Croland
Black Mass
2015 · Film · FBI Wire Tech
Filmography
Series
6 shows
CIA
2026 · Series · Dr. Neil Mosbach
FBI
2018 · Series · Neil Mosbach
MINDHUNTER
2017 · Series · Leo Buchanan
NCIS: New Orleans
2014 · Series · Eddie Oberman
Law & Order: Special Victims Unit
1999 · Series · Rick Donnelly
Law & Order
1990 · Series · Dr. Neil Mosbach
