Dermot Patrick Mulroney (born October 31, 1963) is an American actor and musician. He is known for his roles in romantic comedy, western, and drama films.
Mulroney is known for his work in various films such as Long Gone (1987), Young Guns (1988), Staying Together (1989), Where the Day Takes You (1992), Point of No Return (1993), The Last Outlaw (1993), Angels in the Outfield (1994), My Best Friend's Wedding (1997), About Schmidt (2002), The Wedding Date (2005), Zodiac (2007), August: Osage County (2013), Insidious: Chapter 3 (2015), Scream VI, and Anyone but You (2023).
Mulroney played the main antagonist Francis Gibson in NBC's Crisis (2014), Dr. Walter Wallace in Pure Genius (2016–2017), Sean Pierce in Showtime's Shameless (2015–2017), and Bobby Sheridan in USA's The Purge (2018–2019).
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Anyone But You
Leo
2023
The Getback
Chief Joe Milazzo
2023
Long Shadows
Dallas Garrett
When I'm Ready
Keith
2025
Depravity
Mr. Evers
2024
Blackwater Lane
Matthew
2024
Lights Out
Sage Parker
2024
Breakwater
Ray Childress
2023
The Dirty South
Jeb Roy
2023
A Dark Way Out
Stan
2023
Shooting Stars
Keith Dambrot
2023
The Warrant: Breaker's Law
Dead-Eye / Yule Bronson
2023
You're Killing Me
Congressman Schroder
2023
Scream VI
Detective Bailey
2023
Section 8
Sam Ramsey
2022
Gone in the Night
Ryan Barlowe
2022
Agent Game
Harris
2022
Christmas Is Canceled
Dad - Jack Lockhart
2021
Montford: The Chickasaw Rancher
Boggy Johnson
2021
Cats
Blanket
2018
There's Something About Romcoms
Self
2016
Insidious: Chapter 3
Sean Brenner
2015
August: Osage County
Steve Huberbrecht
2013
Jobs
Mike Markkula
2013
Struck by Lightning
Neal Phillips
2013
Space Warriors
Andy Hawkins
2013
Stoker
Richard Stoker
2013
A Glimpse Inside the Mind of Charles Swan III
Doctor
2013
The Rambler
The Rambler
2013
Trade of Innocents
Alex Becker
2012
Beyond
Jack Musker
2012
Big Miracle
Colonel Scott Boyer
2012
The Grey
Jerome Talget
2012
Silent Witness
Tony Lord
2011
J. Edgar
Colonel Schwarzkopf
2011
The Family Tree
Jack Burnett
2011
Jolene
Uncle Phil
2010
Inhale
Paul Stanton
2010
The Memory Keeper's Daughter
Dr. David Henry
2008
Gracie
Bryan Bowen
2007
Georgia Rule
Dr. Simon Ward
2007
Zodiac
Martin Lee
2007
Griffin & Phoenix
Henry Griffin
2006
The Family Stone
Everett Stone
2005
Must Love Dogs
Bob
2005
The Wedding Date
Nick Mercer
2005
Undertow
John Munn
2004
Hair High
Rod (voice)
2004
About Schmidt
Randall Hertzel
2002
The Safety of Objects
Jim Train
2002
Lovely & Amazing
Kevin McCabe
2002
Intimate Affairs
Edgar
2002
Trixie
Dex Lang
2000
Where the Money Is
Wayne
2000
Goodbye Lover
Jake Dunmore
1999
My Best Friend's Wedding
Michael O'Neal
1997
The Trigger Effect
Joe
1996
Box of Moonlight
Wick
1996
Kansas City
Johnny O'Hara
1996
Copycat
Ruben Goetz
1995
How to Make an American Quilt
Sam
1995
Living in Oblivion
Wolf
1995
There Goes My Baby
Pirate
1994
Bad Girls
Josh McCoy
1994
The Last Outlaw
Eustis
1993
The Thing Called Love
Kyle Davidson
1993
Family Pictures
Mack
1993
Point of No Return
J. P.
1993
Silent Tongue
Reeves McCree
1993
Samantha
Henry
1992
The Heart of Justice
Elliot Burgess
1992
Where the Day Takes You
King
1992
Career Opportunities
Nestor Pyle
1991
Bright Angel
George Russell
1990
Staying Together
Kit McDermott
1989
Longtime Companion
John
1989
Survival Quest
Gray
1989
Young Guns
Dirty Steve Stephens
1988
Long Gone
Jamie Weeks
1987
Daddy
Bobby
1987
Jodie
Lionel (voice)
Ruthless
Harry Sumner
2023
Play Dirty
The Gettysburg Address
Andrew Curtin (voice)
2025
Guns & Moses
Alan Rosner
2025
Killing Mary Sue
Bradley Weiner
2025
Like Father Like Son
Gabe
2025
Laws of Man
Benjamin Bonney
2025
The Inhabitant
Ben
2022
Along for the Ride
Robert West
2022
Umma
Danny
2022
Hard Luck Love Song
Rollo
2021
The Blazing World
Tom Winter
2021
Deadly Illusions
Tom Morrison
2021
The Courier
Special Agent Roberts
2019
SGT. Will Gardner
Buddy
2019
Flesh & Blood
Henry Tooms
2018
I Still See You
August
2018
Monster Challenge
Ben's Agent
2018
The Christmas Train
Tom Langdon
2017
The Mountain Between Us
Mark Robertson
2017
Sleepless
Stanley Rubino
2017
Lavender
Patrick Ryan
2016
Dirty Grandpa
David Kelly
2016
Northpole: Open for Christmas
Ian
2015
Truth
Lawrence Lanpher
2015
Sacrifice
Justin
2015
The D Train
Dermot Mulroney
2015
Careful What You Wish For
Eliott Harper
2015
Abduction
Martin Price
2011
Flash of Genius
Gil Previck
2008
Burn After Reading
Star of "Coming Up Daisy"
2008
Dante's Inferno
Dante (voice)
2007
Heroine of Hell
Callum
1996
Angels in the Outfield
Roger's Father
1994
Unconquered
Richmond Flowers Jr.
1989
Dead and Breakfast
Norman
Sunset
Michael Alperin
1988
Perfectly Imperfect
Jake
Bastard Out of Carolina
Lyle Parsons
1996
Shattered: If Your Kid's on Drugs
Lane
1986
Night Patrol
November 1963
Chuckie Nicoletti
Dead of Night
Sheriff Weaver
The Hunting Wives
Jed Banks · (1 episode)
2025
Secret Invasion
President Ritson · (6 episodes)
2023
Ghosts of Beirut
Robert Ames · (1 episode)
2023
The Jennifer Hudson Show
Self · (2 episodes)
2022
Amend: The Fight for America
Self · (1 episode)
2021
That One Time
Paul Crest · (1 episode)
2020
Messiah
President Young · (2 episodes)
2020
Prodigal Son
Nicholas Endicott · (3 episodes)
2019
The Righteous Gemstones
John Wesley Seasons · (4 episodes)
2019
Hanna
John Carmichael · (14 episodes)
2019
Homecoming
Anthony · (3 episodes)
2018
The Purge
Bobby Sheridan · (1 episode)
2018
Rob Riggle's Ski Master Academy
Dermot Mulroney · (8 episodes)
2018
Station 19
Greg Tanner · (5 episodes)
2018
The Cars That Made America
Self - Narrator · (3 episodes)
2017
Pure Genius
Dr. Walter Wallace · (13 episodes)
2016
To Tell the Truth
Self - Panelist · (2 episodes)
2016
Chicago Med
Battalion Chief Dom Pascal · (1 episode)
2015
Crisis
Francis Gibson · (13 episodes)
2014
Mozart in the Jungle
Andrew Walsh · (3 episodes)
2014
Chicago P.D.
Battalion Chief Dom Pascal · (1 episode)
2014
Chicago Fire
Battalion Chief Dom Pascal · (22 episodes)
2012
The Eric Andre Show
Self · (1 episode)
2012
American Horror Story
Bob Thompson · (3 episodes)
2011
New Girl
Russell Schiller · (8 episodes)
2011
Shameless
Sean Pierce · (23 episodes)
2011
Watch What Happens Live with Andy Cohen
Self - Guest · (2 episodes)
2009
The Colbert Report
Self - Guest · (1 episode)
2005
American Dad!
Jesse (voice) · (1 episode)
2005
The Tony Danza Show
Self · (2 episodes)
2004
The Batman
Green Lantern (voice) · (3 episodes)
2004
Arrested Development
Dusty · (6 episodes)
2003
The Ellen DeGeneres Show
Self · (1 episode)
2003
Jimmy Kimmel Live!
(1 episode)
2003
The View
Self · (1 episode)
1997
Friends
Gavin Mitchell · (3 episodes)
1994
Late Night with Conan O'Brien
Self - Guest · (1 episode)
1993
Sin of Innocence
Tim McGary
1986
Fame
(1 episode)
1982
Saturday Night Live
Self - Cameo (uncredited) · (1 episode)
1975