Seamus Dever
Actor · TV star · Since 1995
Known for
Episode after episode, Seamus Dever has become a familiar American actor, recognized more by role than by name. With 39 credits, the resume is a busy one. Kevin Ryan in 'Castle' is the part that defines the career. Another title with his name on it is 'NCIS'. He began at 25.
Seamus Dever
Actor · TV star · Since 1995
8 Movies · 31 Series
Episode after episode, Seamus Dever has become a familiar American actor, recognized more by role than by name. With 39 credits, the resume is a busy one. Kevin Ryan in 'Castle' is the part that defines the career. Another title with his name on it is 'NCIS'. He began at 25.
TV Shows
Plays Kevin Ryan
Castle
2009
Plays Dr. Chris Ferlinghetti
Army Wives
2007
Plays Graham Thomas
NCIS
2003
Plays Andy the German
Waco: The Aftermath
2023
Plays Alexi Goncharov
NCIS: Los Angeles
2009
Plays Randy
Undressed
1999
Plays Trigon
Titans
2018
Plays Adam Gilford
CSI: Crime Scene Investigation
2000
Plays Agent Detoro
Threshold
2005
Plays Nick Perry
Dark Blue
2009
Plays Chuck
Mad Men
2007
Plays Rich Henderson
Ghost Whisperer
2005
Plays Paul Billings
CSI: Miami
2002
Plays Hank Dempsey
Cold Case
2003
Plays Tom Murch
Crossing Jordan
2001
Plays Mitchell Haines
Charmed
1998
Plays Charles Cooper
CSI: NY
2004
Plays Justin Matthews
Close to Home
2005
Plays Tyler Mack
Drop Dead Diva
2009
Plays Lewis
Pensacola: Wings of Gold
1997
Plays Chaz Bachman
The Rookie
2018
Plays Reed
True Lies
2023
Plays Max DeVeer
Kung Fu
2021
Plays Todd Garlin
Take Two
2018
Plays Tomasz Arndt
Hunters
2020
Plays Scott
NCIS: Hawaiʻi
2021
Plays Caden Duran
JAG
1995
Plays Don Eichman
Legion
2017
Plays Griggs
MacGyver
2016
Plays Ronald Phelps
Without a Trace
2002
Latest Trailers
Watch Trailer
A Great Divide
Full Filmography 39
NCIS
Graham Thomas
2025Season 23
NCIS
Graham Thomas
2024Season 22
Tracker
Max Miller
2024Season 2
A Great Divide
Ranger Tom Drake
2023
Waco: The Aftermath
Andy the German · 5 episodes
2023–
True Lies
Reed
2023Season 1
Hunters
Tomasz Arndt
2023Season 2
Kung Fu
Max DeVeer
2022Season 3
NCIS: Hawaiʻi
Scott
2022Season 2
Photos
Frequently Asked Questions
How old is Seamus Dever and where are they from?
Seamus Dever is 50 years old, born on July 27, 1976 in Flint, Michigan, USA.
What are the most famous roles of Seamus Dever?
Seamus Dever is best known for roles in Hollywoodland, Invitation to a Murder, Outside the Law.
How many movies has Seamus Dever been in?
Over a 25-year career (since 2001), Seamus Dever has appeared in 8 movies and 31 TV shows.
What was Seamus Dever's first movie?
The career of Seamus Dever began with Shooting LA (2001).
What is Seamus Dever's most recent movie or series?
Seamus Dever's most recent release is Tracker, which premiered on February 11, 2024.
What TV shows has Seamus Dever appeared in?
On television, Seamus Dever has appeared in The Rookie, Titans, NCIS, Charmed.
Seamus Dever
1976-07-27 · Flint, Michigan, USA
Seamus Dever (born July 27th, 1976) is an American actor, best known for playing Detective Kevin Ryan in the television series Castle (2009).