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).

Filmography

• 2026Let's Love — Jerry
• 2026Night Patrol — Sarge
• 2026November 1963 — Chuckie Nicoletti
• 2026Perfectly Imperfect — Jake, Executive Producer
• 2025Guns & Moses — Alan Rosner
• 2025Killing Mary Sue — Bradley Weiner
• 2025Laws of Man — Benjamin Bonney
• 2025Like Father Like Son — Gabe
• 2025Long Shadows — Dallas Garrett
• 2025Swiped — Slate
• 2025The Gettysburg Address — Andrew Curtin (voice)
• The Hunting Wives — Jed Banks
• 2025When I'm Ready — Keith
• 2024Blackwater Lane — Matthew
• 2024Dead of Night — Sheriff Weaver
• 2024Depravity — Mr. Evers
• 2024Lights Out — Sage Parker
• 2023A Dark Way Out — Stan
• 2023Anyone but You — Leo
• 2023Breakwater — Ray Childress
• Ghosts of Beirut — Robert Ames
• 2023Ruthless — Harry Sumner
• 2023Scream VI — Detective Bailey
• Secret Invasion — President Ritson
• 2023Shooting Stars — Keith Dambrot
• 2023The Dirty South — Jeb Roy
• 2023The Getback — Chief Joe Milazzo
• 2023The Warrant: Breaker's Law — Dead-Eye / Yule Bronson
• 2023You're Killing Me — Congressman Schroder
• 2022Agent Game — Harris
• 2022Along for the Ride — Robert West
• 2022Gone in the Night — Ryan Barlowe
• 2022Section 8 — Sam Ramsey
• 2022The Inhabitant — Ben
• 2022Umma — Danny
• 2021Christmas Is Canceled — Dad - Jack Lockhart
• 2021Deadly Illusions — Tom Morrison
• 2021Hard Luck Love Song — Rollo
• 2021Montford: The Chickasaw Rancher — Boggy Johnson
• 2021The Blazing World — Tom Winter
• Messiah — President Young
• That One Time — Paul Crest
• Hanna — John Carmichael
• 2019Inside the Internet: 50 Years of Life Online — Director
• Prodigal Son — Nicholas Endicott
• 2019SGT. Will Gardner — Buddy
• 2019The Courier — Special Agent Roberts
• The Righteous Gemstones — John Wesley Seasons
• 2018Flesh & Blood — Henry Tooms
• Homecoming — Anthony
• 2018I Still See You — August
• 2018Monster Challenge — Ben's Agent
• Rob Riggle's Ski Master Academy — Dermot Mulroney
• Station 19 — Greg Tanner
• The Purge — Bobby Sheridan
• 2017Sleepless — Stanley Rubino
• 2017The Christmas Train — Tom Langdon
• 2017The Mountain Between Us — Mark Robertson
• 2016Dirty Grandpa — David Kelly
• 2016Lavender — Patrick Ryan
• Pure Genius — Dr. Walter Wallace
• 2015Careful What You Wish For — Eliott Harper
• Chicago Med — Battalion Chief Dom Pascal
• 2015Insidious: Chapter 3 — Sean Brenner
• 2015Northpole: Open for Christmas — Ian
• 2015Sacrifice — Justin
• 2015The D Train — Dermot Mulroney
• 2015Truth — Lawrence Lanpher
• Chicago P.D. — Battalion Chief Dom Pascal
• Crisis — Francis Gibson
• Mozart in the Jungle — Andrew Walsh
• 2013A Glimpse Inside the Mind of Charles Swan III — Doctor
• 2013August: Osage County — Steve Huberbrecht
• 2013Jobs — Mike Markkula
• 2013Space Warriors — Andy Hawkins
• 2013Stoker — Richard Stoker
• 2013Struck by Lightning — Neal Phillips
• 2013The Rambler — The Rambler
• 2012Beyond — Jack Musker
• 2012Big Miracle — Colonel Scott Boyer
• Chicago Fire — Battalion Chief Dom Pascal
• 2012The Grey — Jerome Talget
• 2012Trade of Innocents — Alex Becker
• 2011Abduction — Martin Price
• American Horror Story — Bob Thompson
• 2011J. Edgar — Colonel Schwarzkopf
• 2011Love, Wedding, Marriage — Director
• New Girl — Russell Schiller
• Shameless — Sean Pierce
• 2011Silent Witness — Tony Lord
• 2011The Family Tree — Jack Burnett
• 2010Inhale — Paul Stanton
• 2010Jolene — Uncle Phil
• 2008Burn After Reading — Star of "Coming Up Daisy"
• 2008Flash of Genius — Gil Previck
• 2008The Memory Keeper's Daughter — Dr. David Henry
• 2007Dante's Inferno — Dante (voice)
• 2007Georgia Rule — Simon Ward
• 2007Gracie — Bryan Bowen
• 2007Zodiac — Martin Lee
• 2006God Grew Tired of Us — Producer
• 2006Griffin & Phoenix — Henry Griffin
• American Dad! — Jesse (voice)
• 2005Must Love Dogs — Bob
• 2005The Family Stone — Everett Stone
• 2005The Wedding Date — Nick Mercer
• 2004Hair High — Rod (voice)
• The Batman — Green Lantern (voice)
• 2004Undertow — John Munn
• Arrested Development — Dusty
• 2002About Schmidt — Randall Hertzel
• 2002Intimate Affairs — Edgar
• 2002Lovely & Amazing — Kevin McCabe
• 2002The Safety of Objects — Jim Train
• 2000Trixie — Dex Lang
• 2000Where the Money Is — Wayne
• 1999Goodbye Lover — Jake Dunmore
• 1997My Best Friend's Wedding — Michael O'Neal
• 1996Bastard Out of Carolina — Lyle Parsons
• 1996Box of Moonlight — Wick
• 1996Heroine of Hell — Callum
• 1996Kansas City — Johnny O'Hara
• 1996The Trigger Effect — Joe
• 1995Copycat — Ruben Goetz
• 1995How to Make an American Quilt — Sam
• 1995Living in Oblivion — Wolf, Associate Producer
• 1994Angels in the Outfield — Roger's Father
• 1994Bad Girls — Josh McCoy
• Friends — Gavin Mitchell
• 1994Journeys North — Collum
• 1994Silent Tongue — Reeves McCree
• 1994There Goes My Baby — Pirate
• Family Pictures — Mack
• 1993Point of No Return — J. P.
• 1993The Last Outlaw — Eustis
• 1993The Thing Called Love — Kyle Davidson
• 1992Samantha — Henry
• 1992The Heart of Justice — Elliot Burgess
• 1992Where the Day Takes You — King, Stunts
• 1991Career Opportunities — Nestor Pyle
• 1990Bright Angel — George Russell
• 1989Longtime Companion — John
• 1989Staying Together — Kit McDermott
• 1989Survival Quest — Gray
• 1989Unconquered — Richmond Flowers Jr.
• 1988Sunset — Michael Alperin
• 1988Young Guns — Dirty Steve Stephens
• 1987Daddy — Bobby
• 1987Long Gone — Jamie Weeks
• 1986Shattered: If Your Kid's on Drugs — Lane
• 1986Sin of Innocence — Tim McGary
• American Playhouse — John
• Fame
• Compound 9 — Col. Dr. Morton Phillips
• Dead and Breakfast — Norman
• Drifter
• Hollow Moon — Sam Foster
• The Families Stone — Everett Stone

Appearances as themselves (16)

• The Jennifer Hudson Show — Self
• Amend: The Fight for America — Self
• Steve — Self
• The Cars That Made America — Self - Narrator
• Soundbreaking — Self - Narrator
• 2016There's Something About Romcoms — Self
• To Tell the Truth — Self - Panelist
• The Eric Andre Show — Self
• Watch What Happens Live with Andy Cohen — Self - Guest
• The Colbert Report — Self - Guest
• The Tony Danza Show — Self
• Jimmy Kimmel Live! — Self
• The Ellen DeGeneres Show — Self
• The View — Self
• Late Night with Conan O'Brien — Self - Guest
• Saturday Night Live — Self - Cameo (uncredited)