Michael O'Neill

Michael O'Neill

​From Wikipedia, the free encyclopedia. Michael O'Neill (born May 29, 1951) is an American actor. With a career stretching through three decades, he usually portrays senior law enforcement or military officers. He is perhaps best known for his role as Special agent Ron Butterfield, the head of Pres…

Filmography

The Mentalist
The Mentalist
2008 · TV
as Sheriff Nelson
NCIS
NCIS
2003 · TV
as Riley McCallister
Grey's Anatomy
Grey's Anatomy
2005 · TV
as Gary Clark
Criminal Minds
Criminal Minds
2005 · TV
as Det. Yarbough
CSI: Miami
CSI: Miami
2002 · TV
as Jerry Blackburn
NCIS: Los Angeles
NCIS: Los Angeles
2009 · TV
as Ret. U.S. Army General Richard Collins
24
24
2001 · TV
as Richard Walsh
24
24
2001 · TV
as Richard Welsh
JAG
JAG
1995 · TV
as Commander Bradley
S.W.A.T.
S.W.A.T.
2017 · TV
as Carl Luca
The West Wing
The West Wing
1999 · TV
as Ron Butterfield
The X-Files
The X-Files
1993 · TV
as Patrol Captain Van Gelder
Diagnosis: Murder
Diagnosis: Murder
1993 · TV
as Sheriff Buck O'Hara
Prison Break
Prison Break
2005 · TV
as Herb Stanton
Chicago Hope
Chicago Hope
1994 · TV
as Bill Wyzinski
Without a Trace
Without a Trace
2002 · TV
as Thomas Shannon
Fringe
Fringe
2008 · TV
as Sheriff Velchik
Sons of Anarchy
Sons of Anarchy
2008 · TV
as Anthony Franklin
ER
ER
1994 · TV
as Col. Ken Kilner
This Is Us
This Is Us
2016 · TV
as Arlo
The Practice
The Practice
1997 · TV
as Judge Robert Temple
Crossing Jordan
Crossing Jordan
2001 · TV
as Chris Benz
Numb3rs
Numb3rs
2005 · TV
as Boyd Keene
Rizzoli & Isles
Rizzoli & Isles
2010 · TV
as Jonathan McKnight