John O'Brien is an American actor and writer best known for Cheaper by the Dozen (2022), BOB ❤️ ABISHOLA (2022), and 9-1-1 (2022).
Filmography
Film Roles
- 1997: Isle Of Lesbos as Farmer
- 1997: Too Good To Be True as Fred
- 1998: Mom Can I Keep Her as Nigel
- 2001: Skippy as Van Man
- 2002: Enough as Front Desk Clerk
- 2005: Mc Bride The Doctor Is Out Really Out as Victor Hancock
- 2006: Our House as Manager
- 2006: Flicka as Mr. Masterson
- 2006: Outta Sync as Rabid Gay Fan (also writer)
- 2007: Sunny And Share Love You as Camilla's Gay Dad
- 2007: The Bucket List as Executive #1
- 2007: The Mastersons Of Manhattan as Servant
- 2012: Being Flynn as Airline Pilot
- 2012: Divorce Invitation as Christopher Matisma
- 2014: Godzilla as Evacuation Worker (Uncredited Role)
- 2015: Mortdecai as Butler
- 2016: The Last Heist as Mark
- 2017: The Student as Prof. McDeers
- 2018: Now and Then as Funeral Director
- 2021: This Games Called Murder as Man in Suit
- 2022: Cheaper by the Dozen as Principal
Television Roles
- 1982: MPSIB as Lin Tac
- 1989: The Cosby Show as Partygoer
- 1997-1999: Clueless as Rand/Assistant/Zombie (4 episodes)
- 1999: Dharma & Greg as Mr. Carter
- 1999: The Drew Carey Show as Rick
- 1999: Beast Master as Village Leader
- 1999-2004: Will & Grace as Man/Salesperson (2 episodes)
- 2000: Arrest And Trial as Burgess
- 2000: The Practice as Foreman
- 2000: The X-Files as Missionary #2
- 2000: Strip Mall as Producer
- 2000: Sabrina the Teenage Witch as Customer #3
- 2001: The Huntress as Mel
- 2001: The Fighting Fitzgeralds as Mr. Berkley
- 2001: Ally McBeal as Waiter
- 2001: Friends as The Airline Employee
- 2001: Scrubs as Man #2
- 2002: Less Than Perfect as Executive
- 2003: Rock Me Baby as Insurance Agent
- 2003: Karen Sisco as Agent #1
- 2003: Malcolm in the Middle as Store Clerk
- 2003: So Downtown as Jay
- 2004: Monk as Maitre'd
- 2004: Phil of the Future as Beefeater
- 2004-2006: What I Like About You as Minister/Dr. Thompson (2 episodes)
- 2005: The West Wing as Reporter #9
- 2005: Two and a Half Men as Waiter
- 2005: Medium as Hotel Clerk
- 2005-2020: Grey's Anatomy as Lab Tech Jeffrey (14 episodes)
- 2007: In Case Of Emergency as Principal Beckman
- 2007: Boston Legal as Clerk #2
- 2007: Desperate Housewives as Dr. Wheeler
- 2008: The Middleman as Newscaster
- 2009: Eleventh Hour as Manager
- 2009: FlashForward as Hawaii Priest
- 2010: NCIS as Bruce
- 2010: Ugly Betty as Joe of Happy Homes
- 2010: Mad Men as Phil Kennedy
- 2010: Mike & Molly as Waiter
- 2011: Better with You as Florist
- 2011: Chuck as Older Technician
- 2011: Law & Order: LA as Scott Hancox
- 2011: Melissa & Joey as Phil Werner
- 2011: Prime Suspect as Andrew Whittaker
- 2011-2016: Pretty Little Liars as Principal Hackett (8 episodes)
- 2012: Community as Chaplin
- 2012: Austin & Ally as Mr. Neidermeyer/Scout (2 episodes)
- 2012: Don't Trust the B---- in Apartment 23 as Tom
- 2012: Victorious as Mr. Mooney
- 2013: Stevie TV as Minister
- 2013: The Crazy Ones as Larry
- 2014: Trophy Wife as Manager
- 2014: Rake as Judge
- 2014: Drop Dead Diva as Nathan Blagman
- 2014: Hand of God as Mr. O'Neill
- 2014: Kickin' It as David Basso
- 2015: Workaholics as Doctor
- 2015: The Player as Louis Scrivner
- 2015: Transparent as Professor
- 2016: Young & Hungry as Mr. Klepfer
- 2016: Superstore as Mike
- 2017: Mom as Waiter
- 2017: Criminal Minds as Dr. Meyer
- 2017: The Mindy Project as Dr. Jones
- 2017: The Comedy Get Down as Joe Garvin
- 2018: Shameless (US) as Father Monroe
- 2019: Light As A Feather as Rev. Fahey
- 2019: Solve as Mr. Lehman
- 2019: Before We Go as Tightbuns
- 2020: Dirty John as Cameron Scott
- 2020: Perry Mason as Ernie Magnuson
- 2022: SWAT as Weber
- 2022: BOB ❤️ ABISHOLA as James
- 2022: 9-1-1 as Rod Billings
Shorts
- 2016: The Elvis Room as The Manager
- 2016: Unremarkable as Tim
- 2018: Someone You Know as Jimbo
