8.2
TV
Acting
John O'Brien
- Credits
- 58 titles
Biography
We don't have a biography for John O'Brien yet.
Signature work
Known For
8.2
TV
8.4
TV
Friends
8.5
TV
Malcolm in the Middle
8.3
TV
Criminal Minds
7.4
TV
Two and a Half Men
8.4
TV
The X-Files
8.2
TV
Shameless
8.2
TV
9-1-1
8.0
TV
Pretty Little Liars
5.5
Movie
Mortdecai
7.6
TV
NCIS
8.0
TV
Community
7.9
TV
Desperate Housewives
8.2
TV
Victorious
8.1
TV
Mad Men
8.0
TV
S.W.A.T.
7.9
TV
Monk
6.6
Movie
Enough
Acting credits 58
| Year | Title | Role |
|---|---|---|
| 2024 | Good Grief Film | Dan |
| 2022 | Cheaper by the Dozen Film | Principal |
| 2021 | This Game's Called Murder Film | Man in Suit |
| 2021 | Hacks TV | Duncan (1 ep) |
| 2020 | Perry Mason TV | Ernie Magnuson (1 ep) |
| 2019 | Bob Hearts Abishola TV | James (1 ep) |
| 2018 | Dirty John TV | Cameron Scott (2 ep) |
| 2018 | Light as a Feather TV | Reverend Fahey (2 ep) |
| 2018 | 9-1-1 TV | Rod Billings (1 ep) |
| 2017 | S.W.A.T. TV | Weber (1 ep) |
| 2016 | The Last Heist Film | Manager Mark |
| 2015 | Superstore TV | Mike (1 ep) |
| 2015 | Mortdecai Film | Butler |
| 2014 | Transparent TV | Professor (1 ep) |
| 2014 | Young & Hungry TV | Mr. Klepfer (1 ep) |
| 2013 | The Crazy Ones TV | Larry (1 ep) |
| 2013 | Mom TV | Waiter (1 ep) |
| 2012 | The Mindy Project TV | Dr. Jones (1 ep) |
| 2012 | Don't Trust the B---- in Apartment 23 TV | Tom (1 ep) |
| 2012 | Being Flynn Film | Airline Pilot |
| 2011 | Austin & Ally TV | Mr. Neidermeyer (1 ep) |
| 2011 | Workaholics TV | Doctor (1 ep) |
| 2011 | Shameless TV | Father Monroe (1 ep) |
| 2010 | Law & Order: LA TV | Scott Hancox (1 ep) |
| 2010 | Better With You TV | Florist (1 ep) |
| 2010 | Pretty Little Liars TV | Principal Hackett (6 ep) |
| 2010 | Victorious TV | Mr. Mooney (1 ep) |
| 2009 | Community TV | Chaplin (1 ep) |
| 2008 | Eleventh Hour TV | Manager (1 ep) |
| 2008 | The Middleman TV | Newscaster (1 ep) |
| 2007 | Chuck TV | Older CIA Tech (1 ep) |
| 2007 | Mad Men TV | Phil Kennedy (1 ep) |
| 2006 | Flicka Film | Mr. Masterson |
| 2006 | Ugly Betty TV | Joe of Happy Homes (1 ep) |
| 2005 | Criminal Minds TV | Dr. Meyer (1 ep) |
| 2005 | Grey's Anatomy TV | Lab Tech Jeffrey (12 ep) |
| 2005 | Medium TV | Hotel Clerk (1 ep) |
| 2004 | Desperate Housewives TV | Dr. Wheeler (1 ep) |
| 2004 | Boston Legal TV | Clerk #2 (1 ep) |
| 2003 | NCIS TV | Bruce (1 ep) |
| 2003 | Two and a Half Men TV | Waiter (1 ep) |
| 2002 | Less than Perfect TV | Executive (1 ep) |
| 2002 | What I Like About You TV | Dr. Thompson, Minister (1 ep) |
| 2002 | Monk TV | Maitre'd (1 ep) |
| 2002 | Enough Film | Front Desk Clerk |
| 2001 | Scrubs TV | Man (1 ep) |
| 2000 | Malcolm in the Middle TV | Sales Clerk (1 ep) |
| 1999 | BeastMaster TV | Village leader (1 ep) |
| 1999 | The West Wing TV | Reporter (1 ep) |
| 1998 | Will & Grace TV | Salesperson, Man (1 ep) |
| 1998 | Mom, Can I Keep Her? Film | Nigel |
| 1997 | Ally McBeal TV | Waiter (1 ep) |
| 1997 | The Practice TV | Foreman (1 ep) |
| 1997 | Isle of Lesbos Film | Farmer |
| 1996 | Clueless TV | Zombie (1 ep) |
| 1995 | The Drew Carey Show TV | Rick (1 ep) |
| 1994 | Friends TV | Airline Employee (1 ep) |
| 1993 | The X-Files TV | Missionary #2 (1 ep) |