Brian Geraghty
Known for acting · Born 13 May 1974 · 52 · Toms River, New Jersey, USA
60 credits
Brian Timothy Geraghty (born May 13, 1974) is an American film and television actor, best known for his roles as Ronald Pergman on Big Sky, Dale on the series The Fugitive, Gene Colder on Briarpatch, Theodore Roosevelt on The Alienist, Police Officer Sean Roman on Chicago P.D., Specialist Owen Eldredge in the Academy Award-winning film The Hurt Locker, Tom Bogdan in We Are Marshall, Billy Hodge in The Guardian, and Fergus O'Donnell in Jarhead.
Known for
Chicago P.D.
2014
The Hurt Locker
2008
Big Sky
2020
Flight
2012
ATM
2012
1923
2022
When a Stranger Calls
2006
Chicago Fire
2012
The Alienist
2018
The Standoff at Sparrow Creek
2019
Wildlike
2015
Blindfire
2020
Acting (59)
2025The Luckiest Man in AmericaEdFilm
2024Red Right HandSheriff HollisterFilm
20221923Zane Davis · 15 episodesSeries
2022GaslitPeter · 2 episodesSeries
2020Big SkyRonald Pergman · 34 episodesSeries
2020BlindfireWill BishopFilm
2020BriarpatchGene Colder · 10 episodesSeries
2020The FugitiveDale · 14 episodesSeries
2019Extremely Wicked, Shockingly Evil and VileFlorida Public Defender Dan DowdFilm
2019The Standoff at Sparrow CreekNoahFilm
2019AvenuesJackFilm
2019FaithChrisFilm
2018The AlienistTheodore Roosevelt · 10 episodesSeries
2018My Days of MercyWeldonFilm
2015Chicago MedSean Roman · 3 episodesSeries
2015WildlikeUncleFilm
2015Verbatim: The Ferguson CaseDarren WilsonFilm
2014Chicago P.D.Sean Roman · 47 episodesSeries
2014Date and SwitchLarsFilm
2014The IdenticalWilliam HemsleyFilm
2014Loitering with IntentDevonFilm
2013Ass BackwardsBrianFilm
2013KilimanjaroDougFilm
2012FlightKen EvansFilm
2012Chicago FireSean Roman · 6 episodesSeries
2012ATMDavid HargroveFilm
201210 YearsGarrityFilm
2012Heroes and DemonsDan (segment "The Second Bakery Attack")Film
2012RefugeSamFilm
2011Seven Days in UtopiaJakeFilm
2010Boardwalk EmpireAgent Warren KnoxSeries
2010Open HouseDavidFilm
2010The ChameleonBrian JansenFilm
2010BastardManFilm
2010KrewsHenry McFarlinFilm
2010The Second Bakery AttackDanFilm
2010Jake Gyllenhaal Challenges the Winner of the Nobel Peace PrizeFergus O'Donnell (archive footage)Film
2009Easier with PracticeDavy MitchellFilm
2008The Hurt LockerSpecialist Owen EldridgeFilm
2008True BloodBrian Eller · 3 episodesSeries
2008Love Lies BleedingDukeFilm
2007An American CrimeBradleyFilm
2007I Know Who Killed MeJerrod PointerFilm
2006The GuardianBilly HodgeFilm
2006When a Stranger CallsBobbyFilm
2006We Are MarshallTom BogdanFilm
2006BobbyJimmyFilm
2006Art School ConfidentialStoobFilm
2006Conversations with Other WomenGroomFilm
2006The Elder SonGregFilm
2006Cruel WorldCollinFilm
2006"Jarhead" DiariesSelfFilm
2005JarheadFergus O'DonnellFilm
2002Town DiaryYoung Frank RyanFilm
2000EdAriSeries
1999Law & Order: Special Victims UnitPeter Butler, Sean RomanSeries
1999The SopranosCounter BoySeries
1990Law & OrderPhillip LudwickSeries
—KockroachFilm
Production (1)
2015The Stanford Prison ExperimentExecutive ProducerFilm