Alan John 'A.J.' Buckley (born February 9, 1977) is an Irish-Canadian actor. He is known for playing nerdy crime lab technician Adam Ross on the CSI: NY (2005–2013) and Navy SEAL Sonny Quinn on the series SEAL Team (2017–). He also had roles in Supernatural (2006–2014), The Box (2007), Home Sweet Hell (2015), and as the voice of Nash in The Good Dinosaur (2015).

Hunting Season
Davenport
2025

Bark
The Outdoorsman
2024

LaRoy, Texas
Stranded Man
2024

Sergio and Sergei
Detective Hall
2018

SEAL Team
Sonny Quinn · (112 episodes)
2017

Pure
Bronco · (6 episodes)
2017

Rush Hour
Steven · (1 episode)
2016

The Good Dinosaur
Nash (voice)
2015

Narcos
Kevin Brady · (1 episode)
2015

Home Sweet Hell
Murphy
2015

Murder in the First
Marty 'Junior' McCormack · (12 episodes)
2014

Teenage Mutant Ninja Turtles
Pigeon Pete (voice) · (3 episodes)
2012

Teenage Mutant Ninja Turtles
Pete (voice) · (1 episode)
2012

Longmire
Keith Dixon · (1 episode)
2012

Zombie Hamlet
Marvin
2012

Doomsday Prophecy
Eric Fox
2011

Skateland
Teddy Tullos
2011

Christmas Mail
Matt Sanders
2010

Hawaii Five-0
Julius Brennan · (1 episode)
2010

Ghostfacers
Ed Zeddmore · (10 episodes)
2010

Justified
Danny Crowe · (9 episodes)
2010

Wolverine and the X-Men: Fate of the Future
Mortimer Toynbee (voice) (archive footage)
2010

Republic of Doyle
Alex Marshall · (1 episode)
2010

The Mentalist
Aaron "Ace" Brunell · (1 episode)
2008

Walking Tall: The Payback
Harvey Morris
2007

The Last Sin Eater
Angor Forbes
2007

The Box
Danny Schamus
2007

Happy Feet
(voice)
2006

You Did What?
Greg Porter
2006

Jimmy and Judy
Buddy
2006

Manticore
Pvt. Sulley
2005

Bones
Dan · (1 episode)
2005

Supernatural
Ed Zeddmore · (3 episodes)
2005

Fat Actress
McG Stand-In · (1 episode)
2005

CSI: NY
Adam Ross · (129 episodes)
2004

Entourage
(1 episode)
2004

The Collector
(1 episode)
2004

In Enemy Hands
Medical Officer
2004

Wild Roomies
Reno
2004

Silent Warnings
Layne Vossimer
2003

Blue Car
Pat
2003

Nightstalker
Samo
2002

100 Women
Jesse
2002

Without a Trace
Richie Dobson · (1 episode)
2002

Wishcraft
Howie
2002
Scream at the Sound of the Beep
Peter
2002

Extreme Days
Will
2001

The Forsaken
Mike
2001

Motocrossed!
Jimmy Bottles
2001

Deal of a Lifetime
Axe
2000

The District
Gaines · (1 episode)
2000

CSI: Crime Scene Investigation
Ted Martin · (1 episode)
2000

Convergence
Stanley Kobus
2000

The In Crowd
Wayne
2000

In a Class of His Own
Jake Matteson
1999

Jack & Jill
(1 episode)
1999

Random Acts of Violence
Johnathan
1999

Disturbing Behavior
Charles 'Chug' Roman
1998

Millennium
Josh Comstock · (1 episode)
1996

The X-Files
Dude · (1 episode)
1993

Are You Afraid of the Dark?
(1 episode)
1992