![Thomas Philip O'Neill Portrait of Thomas Philip O'Neill](http://actoragecheck.com/limage/L29jTXVaZ3lNUlFRdVQ2WGRJN2VkQzF6UVZDTy5qcGcAACh231.jpg)
Movies (Acting Roles)
Sorted by Release DateTV Shows (Acting Roles)
Sorted by Release DateAges in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages
![MINDHUNTER Poster of MINDHUNTER](http://actoragecheck.com/image/L2ZiS0U4N21vanBJRVRXZXBTYkQ1UXQ3NDFmcC5qcGcAACh231.jpg)
MINDHUNTER
Thomas Philip O'Neill was
? in MINDHUNTER
as 'Leo Buchanan'.
First Air Date
Fri, Oct 13 2017
Fri, Oct 13 2017
![NCIS: New Orleans Poster of NCIS: New Orleans](http://actoragecheck.com/image/LzFXSkpVVVpPRG1SVGNGeWRMREJVdGl6dEw2eC5qcGcAACh231.jpg)
NCIS: New Orleans
Thomas Philip O'Neill was
? in NCIS: New Orleans
as 'Eddie Oberman'.
First Air Date
Tue, Sep 23 2014
Tue, Sep 23 2014
![Law & Order: Special Victims Unit Poster of Law & Order: Special Victims Unit](http://actoragecheck.com/image/L29ubVNWd1lzUE1ZdE84T2pMZGpTOEZmUk5LYi5qcGcAACh231.jpg)
Law & Order: Special Victims Unit
Thomas Philip O'Neill was
? in Law & Order: Special Victims Unit
as 'Rick Donnelly'.
First Air Date
Mon, Sep 20 1999
Mon, Sep 20 1999