Dan O'Brien

Acting

Dan O'Brien

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

Highlights

Grey's Anatomy2005 · Series · Keith Gardner
How I Met Your Mother2005 · Series · Meeker
Law & Order1990 · Series · Delray
The Affair2014 · Series · Seth
American Housewife2016 · Series · Daniel
Gunslingers2025 · Film · Josh

Filmography

Movies

5 films

Descendent2025 · Film · Christian
Gunslingers2025 · Film · Josh
Occupant2018 · Film · Frank
Brand New Old Love2017 · Film · Thom
Astraea2015 · Film · James

Filmography

Series

6 shows

American Housewife2016 · Series · Daniel
The Affair2014 · Series · Seth
Whitney2011 · Series · Mark
How I Met Your Mother2005 · Series · Meeker
Grey's Anatomy2005 · Series · Keith Gardner
Law & Order1990 · Series · Delray