Denis Colin Leary (born August 18, 1957) is an American actor, comedian, writer, director and film producer. Leary is known for his biting, fast paced comedic style and chain smoking. He is the star and co-creator of the television show Rescue Me, which ended its seventh and final season on September 7, 2011. Leary has starred in many motion pictures, most recently as CaptainGeorge Stacy in Marc Webb's 2012 film The Amazing Spider-Man and the voice of Diego in the animated Ice Age series.
| Movie | Oh. What. Fun. | Nick | 2025-12-02 |
| Series | Going Dutch | Colonel Patrick Quinn | 2025-01-02 |
| Series | No Good Deed | Mikey Morgan | 2024-12-12 |
| Movie | Spider-Man: Across the Spider-Verse | Captain Stacy (archive footage) (uncredited) | 2023-05-31 |
| Movie | Spider-Man: All Roads Lead to No Way Home | Self (archive footage) | 2022-05-03 |
| Movie | Patrice O'Neal: Killing Is Easy | Self | 2021-02-19 |
| Series | The Moodys | Sean Moody Sr. | 2019-12-04 |
| Movie | Ice Age: Collision Course | Diego (voice) | 2016-06-23 |
| Movie | Ice Age: The Great Egg-Scapade | Diego (voice) | 2016-03-19 |
| Movie | 9/11: Fifteen Years Later | Self - Host | 2016-09-11 |
| Movie | Scrat: Spaced Out | Diego (voice) | 2016-10-11 |
| Series | Sex&Drugs&Rock&Roll | Johnny Rock | 2015-07-16 |
| Movie | Cosmic Scrat-tastrophe | Diego (voice) | 2015-11-06 |
| Movie | Freaks of Nature | Rick Wilson | 2015-10-30 |
| Movie | Draft Day | Vince Penn | 2014-04-11 |
| Movie | The Amazing Spider-Man 2 | Captain Stacy (uncredited) | 2014-04-16 |
| Movie | The Amazing Spider-Man | Captain Stacy | 2012-06-23 |
| Movie | Ice Age: Continental Drift | Diego (voice) | 2012-06-27 |
| Movie | Denis Leary and Friends Present: Douchebags and Donuts | Himself | 2011-01-18 |
| Movie | Give It Up for Greg Giraldo | Self | 2011-03-18 |
| Movie | Ice Age: A Mammoth Christmas | Diego (voice) | 2011-11-24 |
| Movie | Scrat's Continental Crack-Up: Part 2 | Diego (voice) | 2011-11-16 |
| Movie | Back From Hell: A Tribute to Sam Kinison | Self | 2010-02-06 |
| Movie | Ice Age: Dawn of the Dinosaurs | Diego (voice) | 2009-06-26 |
| Movie | Cloudy with a Chance of Meatballs | Additional Voices (voice) | 2009-09-17 |
| Movie | Recount | Michael Whouley | 2008-05-25 |
| Movie | Kings of Comedy USA | Self (archive footage) | 2006-10-23 |
| Movie | Ice Age: The Meltdown | Diego (voice) | 2006-03-29 |
| Movie | NHL: Vintage Collection: Greatest Goals | 2005-01-04 | |
| Movie | Merry F#%$in' Christmas | Self | 2005-11-27 |
| Movie | Comedy Central Roast of Jeff Foxworthy | Self | 2005-03-20 |
| Series | Fashion Rocks | Unknown | 2004-09-26 |
| Series | Rescue Me | Tommy Gavin | 2004-07-21 |
| Series | The Tony Danza Show | Unknown | 2004-09-13 |
| Movie | 2004 Boston Red Sox: The Official World Series Film | Narrator | 2004-11-01 |
| Movie | Reverse of the Curse of the Bambino | Himself | 2004-12-10 |
| Movie | Last Laugh '04 | Self | 2004-12-12 |
| Movie | Richard Pryor: I Ain't Dead Yet, #*%$#@!! | Self | 2003-01-01 |
| Movie | When Stand Up Stood Out | Self | 2003-01-01 |
| Movie | Comedy Central Roast of Denis Leary | Self | 2003-08-10 |
| Series | The Ellen DeGeneres Show | Unknown | 2003-09-08 |
| Movie | The Curse of the Bambino | Himself | 2003-09-16 |
| Movie | Lord Stanley's Cup: Hockey's Ultimate Prize | 2003-11-25 | |
| Movie | Ice Age | Diego (voice) | 2002-03-14 |
| Series | Crank Yankers | Unknown | 2002-06-02 |
| Movie | Dawg | Douglas 'Dawg' Menford | 2002-02-21 |
| Series | Contest Searchlight | 2002-08-01 | |
| Series | Tough Crowd with Colin Quinn | 2002-12-09 | |
| Movie | The Secret Lives of Dentists | Slater | 2002-09-09 |
| Movie | Final | Bill | 2001-06-08 |
| Series | The Job | Mike McNeil | 2001-03-14 |
| Movie | Double Whammy | Ray Pluto | 2001-10-17 |
| Movie | Company Man | Officer Fry | 2000-03-09 |
| Movie | Lakeboat | Fireman | 2000-04-13 |
| Movie | Sand | Teddy | 2000-11-27 |
| Movie | Jesus' Son | Wayne | 2000-06-16 |
| Movie | True Crime | Bob Findley | 1999-03-19 |
| Movie | The Thomas Crown Affair | Det. Michael McCann | 1999-08-06 |
| Series | The Early Show | Unknown | 1999-11-01 |
| Movie | Do Not Disturb | Simon | 1999-11-04 |
| Movie | The Real Blonde | Doug | 1998-02-27 |
| Movie | Wide Awake | Mr. Beal | 1998-03-20 |
| Series | Fantasy World Cup | Unknown | 1998-06-09 |
| Movie | A Bug's Life | Francis (voice) | 1998-11-25 |
| Movie | Monument Ave. | Bobby O'Grady | 1998-09-25 |
| Movie | Small Soldiers | Gil Mars | 1998-07-10 |
| Movie | Subway Stories | Wheelchair Man (segment "The Red Shoes") | 1997-07-24 |
| Movie | Love Walked In | Jack Hanaway | 1997-01-18 |
| Movie | Suicide Kings | Lono Veccio | 1997-09-06 |
| Series | The View | Unknown | 1997-08-11 |
| Movie | Wag the Dog | Fad King | 1997-12-25 |
| Movie | The Matchmaker | Nick | 1997-10-03 |
| Movie | The Second Civil War | Vinnie Franco | 1997-12-04 |
| Movie | Denis Leary: Lock 'N Load | Himself | 1997-11-15 |
| Movie | Two If by Sea | Francis 'Frank' O'Brien | 1996-01-12 |
| Movie | Underworld | Johnny Crown / Johnny Alt | 1996-06-01 |
| Series | The Daily Show | Unknown | 1996-07-22 |
| Series | E! True Hollywood Story | Unknown | 1996-08-21 |
| Movie | Operation Dumbo Drop | Lt. David Poole | 1995-07-28 |
| Series | Dr. Katz, Professional Therapist | Unknown | 1995-05-28 |
| Movie | The State's 43rd Annual All-Star Halloween Special | Self | 1995-10-27 |
| Movie | National Lampoon's Favorite Deadly Sins | Jake | 1995-11-12 |
| Movie | The Neon Bible | Frank | 1995-08-23 |
| Movie | The Ref | Gus | 1994-03-09 |
| Movie | Judgment Night | Fallon | 1993-10-15 |
| Movie | Denis Leary: No Cure for Cancer | Himself | 1993-02-20 |
| Movie | National Lampoon's Loaded Weapon 1 | Mike McCracken | 1993-02-04 |
| Movie | The Sandlot | Bill | 1993-04-07 |
| Movie | Denis Leary: MTV Unplugged | Himself | 1993-03-13 |
| Movie | Demolition Man | Edgar Friendly | 1993-10-08 |
| Series | Late Night with Conan O'Brien | Unknown | 1993-09-13 |
| Movie | Gunmen | Armor O'Malley | 1993-05-21 |
| Movie | Who's the Man? | Sgt. Cooper | 1993-04-23 |
| Series | The Tonight Show with Jay Leno | Unknown | 1992-05-25 |
| Movie | Strictly Business | Jake | 1991-11-08 |
| Series | The Simpsons | Unknown | 1989-12-17 |
| Series | LIVE with Kelly and Mark | Unknown | 1988-09-05 |
| Series | CBS News Sunday Morning | Unknown | 1979-01-28 |