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

Law & Order

How I Met Your Mother

American Housewife

The Affair

Whitney

Gunslingers

Descendent

All Movies (6)

• Descendent2025 · as Christian
• Gunslingers2025 · as Josh
• Occupant2018 · as Frank
• Brand New Old Love2017 · as Thom
• Astraea2015 · as James
• The Delray Story— · as Delray

All TV Shows (6)

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