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Dan O'Brien

Acting

Dan O'Brien

Biography

Dan O'Brien is an actor, known for Whitney (2011), Grand Theft Auto IV (2008) and The Delray Story (2011). He graduated from the University of Notre Dame in 1999.

Known for

Grey's Anatomy

IMDb7.6

Grey's Anatomy

Keith Gardner

How I Met Your Mother

IMDb8.3

How I Met Your Mother

Meeker

Law & Order

IMDb7.8

Law & Order

Delray

The Affair

IMDb7.9

The Affair

Seth

American Housewife

IMDb7.4

American Housewife

Daniel

Gunslingers

IMDb3.6

Gunslingers

Josh

Descendent

IMDb4.9

Descendent

Christian

Whitney

IMDb5.8

Whitney

Mark

Brand New Old Love

IMDb4.8

Brand New Old Love

Thom

Astraea

6.0 TMDB

Astraea

James

Occupant

6.0 TMDB

Occupant

Frank

The Delray Story

5.0 TMDB

The Delray Story

Delray

Filmography

  1. 2025DescendentChristianMovie
  2. 2025GunslingersJoshMovie
  3. 2018OccupantFrankMovie
  4. 2017Brand New Old LoveThomMovie
  5. 2016American HousewifeDanielSeries
  6. 2015AstraeaJamesMovie
  7. 2014The AffairSethSeries
  8. 2011WhitneyMarkSeries
  9. 2005How I Met Your MotherMeekerSeries
  10. 2005Grey's AnatomyKeith GardnerSeries
  11. 1990Law & OrderDelraySeries
  12. —The Delray StoryDelrayMovie