Seamus Dever

actor • producer • soundtrack

Seamus Dever (born July 27th, 1976) is an American actor, best known for playing Detective Kevin Ryan in the television series Castle (2009).

Born: July 27, 1976 in Flint, Michigan, USA (age 48)

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Known For

6.3

NCIS: Los Angeles

Movies & TV Credits

51 total credits across film and television

Title	Rating	Job	Role(s)	Year
Tracker TV Show	7.3	Actor	Max Miller(1 Episode)	2024
Invitation to a Murder Movie	5.4	Actor	Lawrence Kane	2023
A Great Divide Movie	5.5	Actor	Ranger Tom Drake	2023
True Lies TV Show	5.4	Actor	Reed(1 Episode)	2023
Waco: The Aftermath Limited Series	7.4	Actor	Andy the German(5 Episodes)	2023
NCIS: Hawai'i TV Show	7.0	Actor	Scott(1 Episode)	2021
Awaken Short Film	7.1	Actor	Henry Viser	2021
Kung Fu TV Show	5.9	Actor	Max DeVeer(1 Episode)	2021
Hunters TV Show	7.0	Actor	Tomasz Arndt(1 Episode)	2020
The Rookie TV Show	7.9	Actor	Chaz Bachman(1 Episode)	2018
Take Two TV Show	7.3	Actor	Todd Garlin(1 Episode)	2018
Titans TV Show	7.3	Actor	Trigon / Captain Frank Finney(1 Episode)	2018
Titans TV Show	7.3	Actor	Trigon(2 Episodes)	2018
Legion TV Show	7.9	Actor	Don Eichman(1 Episode)	2017
Mindgame Short Film	8.0	Actor	Ray	2017
Mindgame Short Film	8.0	Production	Executive Producer	2017
MacGyver TV Show	5.7	Actor	Griggs(1 Episode)	2016
Ready or Not Movie	4.4	Actor	Marc	2009
Castle TV Show	8.2	Actor	Kevin Ryan(173 Episodes)	2009
NCIS: Los Angeles TV Show	7.0	Actor	Alexi Goncharov(3 Episodes)	2009
Drop Dead Diva TV Show	7.3	Actor	Tyler Mack(1 Episode)	2009
Dark Blue TV Show	7.2	Actor	Nick Perry(2 Episodes)	2009
Mad Men TV Show	8.5	Actor	Chuck(1 Episode)	2007
Army Wives TV Show	7.4	Actor	Dr. Chris Ferlinghetti(7 Episodes)	2007
Hollywoodland Movie	6.3	Actor	Phillip	2006
Ghost Whisperer TV Show	6.7	Actor	Rich Henderson(1 Episode)	2005
Threshold TV Show	7.1	Actor	Agent Detoro(2 Episodes)	2005
Close to Home TV Show	6.5	Actor	Justin Matthews(1 Episode)	2005
Mystery Woman: Snapshot Movie	6.9	Actor	Billy	2005
McBride: The Doctor Is Out... Really Out Movie	6.3	Actor	Allen	2005
CSI: NY TV Show	7.2	Actor	Charles Cooper(1 Episode)	2004
Nikki and Nora Movie	7.6	Actor	Officer Paul Cordone	2004
NCIS TV Show	7.9	Actor	NCIS Deputy Director Gabriel LaRoche(1 Episode)	2003
Cold Case TV Show	7.8	Actor	Hank Dempsey(1 Episode)	2003
NCIS TV Show	7.9	Actor	Graham Thomas(1 Episode)	2003
NCIS TV Show	7.9	Actor	Inspector General Gabriel LaRoche(1 Episode)	2003
NCIS TV Show	7.9	Actor	Gabriel LaRoche(5 Episodes)	2003
Monkey Love Movie	4.1	Actor	Aaron Miles	2002
Outside the Law Movie	4.1	Actor	Rick Michell	2002
CSI: Miami TV Show	6.7	Actor	Paul Billings(1 Episode)	2002
Without a Trace TV Show	7.2	Actor	Ronald Phelps(1 Episode)	2002
She's No Angel Movie	5.0	Actor	Cricket	2002
Shooting LA Movie	6.9	Actor	Colin	2001
Crossing Jordan TV Show	7.1	Actor	Tom Murch(1 Episode)	2001
CSI: Crime Scene Investigation TV Show	7.8	Actor	Drew Rich(1 Episode)	2000
CSI: Crime Scene Investigation TV Show	7.8	Actor	Adam Gilford(1 Episode)	2000
Undressed TV Show	6.1	Actor	Randy(3 Episodes)	1999
Charmed TV Show	7.4	Actor	Mitchell Haines(1 Episode)	1998
Pensacola: Wings of Gold TV Show	5.8	Actor	Lewis(1 Episode)	1997
JAG TV Show	6.9	Actor	Caden Duran(1 Episode)	1995
The Black Movie	—	Actor	Dr. Simon Carver	—

Videos

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Seamus Dever

Known For

Hollywoodland

Castle

NCIS

NCIS: Los Angeles

Movies & TV Credits

Videos