| The Affair | 2014 | Dr. Henry | TV Show |
| The Moor | 2014 | Richard | Short Film |
| Mob City | 2013 | Hal Morrison | TV Show |
| The Blacklist | 2013 | Earl King | TV Show |
| Chicago Fire | 2012 | Peter | TV Show |
| Another Happy Day | 2011 | Lee | Movie |
| 6 Souls | 2010 | Dr. Harding | Movie |
| The Walking Dead | 2010 | Dale Horvath | TV Show |
| God in America | 2010 | John Hughes | TV Show |
| Cayman Went | 2009 | Rodgers Bowman (as Jeff DeMunn) | Movie |
| The Good Wife | 2009 | Chief Justice Virgil Ryvlan | TV Show |
| Around the Block | 2009 | George | Short Film |
| Burn After Reading | 2008 | Cosmetic Surgeon | Movie |
| Cashmere Mafia | 2008 | Henry Gorham | TV Show |
| The Mist | 2007 | Dan Miller | Movie |
| Hollywoodland | 2006 | Art Weissman | Movie |
| Covert One: The Hades Factor | 2006 | Steven Haldane | TV Show |
| Empire Falls | 2005 | Horace | TV Show |
| Law & Order: Trial by Jury | 2005 | Defense Attorney Professor Norman Rothenberg | TV Show |
| The Persistence of Dreams | 2005 | Abraham Lincoln | Short Film |
| The Lucky Ones | 2003 | Simon | Movie |
| Our Town | 2003 | Mr. Webb | TV Movie |
| Swimming Upstream | 2002 | Dr. Henry Berkson | Movie |
| Hack | 2002 | Vasily Yurchenko | TV Show |
| The Majestic | 2001 | Ernie Cole | Movie |
| Noriega: God's Favorite | 2000 | Nuncio | TV Movie |
| D.C. | 2000 | | TV Show |
| Gideon's Crossing | 2000 | Dr. Tom Kagen | TV Show |
| The Fugitive | 2000 | Will Alagash | TV Show |
| The Green Mile | 1999 | Harry Terwilliger | Movie |
| Storm of the Century | 1999 | Town Manager Robbie Beals | TV Show |
| Law & Order: Special Victims Unit | 1999 | Senior ADA Charlie Phillips / Chief Assistant DA Charlie Phillips | TV Show |
| The West Wing | 1999 | Kenneth Sean 'Ken' O'Neal | TV Show |
| Girls' Night | 1998 | Extra (uncredited) | Movie |
| Harvest | 1998 | Jake Yates (as Jeffrey De Munn) | Movie |
| The X Files | 1998 | Bronschweig (as Jeffrey De Munn) | Movie |
| Black Cat Run | 1998 | Bill Grissom | TV Movie |
| RocketMan | 1997 | Paul Wick | Movie |
| Turbulence | 1997 | Brooks | Movie |
| A Christmas Memory | 1997 | Seabone | TV Movie |
| Night Sins | 1997 | SAC Bruce Di Palma | TV Movie |
| Path to Paradise: The Untold Story of the World Trade Center Bombing. | 1997 | Robert Brokaw | TV Movie |
| Cracker: Mind Over Murder | 1997 | Henry Garner | TV Show |
| The Practice | 1997 | Atty. Gordon Keene | TV Show |
| Phenomenon | 1996 | Professor Ringold | Movie |
| Killer: A Journal of Murder | 1995 | Sam Lesser | Movie |
| Almost Golden: The Jessica Savitch Story | 1995 | Mel Korn | TV Movie |
| Citizen X | 1995 | Andrei Chikatilo | TV Movie |
| Down Came a Blackbird | 1995 | Rob Rubenstein | TV Movie |
| Ebbie | 1995 | Jake Marley | TV Movie |
| Hiroshima | 1995 | J. Robert Oppenheimer | TV Movie |
| The Outer Limits | 1995 | Dr. Adam Pike | TV Show |
| Safe Passage | 1994 | Doctor | Movie |
| The Shawshank Redemption | 1994 | 1946 D.A. | Movie |
| Betrayal of Trust | 1994 | Dick Shelton (as Jeff DeMunn) | TV Movie |
| ER | 1994 | Treatment Center Doctor | TV Show |
| Barbarians at the Gate | 1993 | H. John Greeniaus | TV Movie |
| Tribeca | 1993 | Ben Baker | TV Show |
| Newsies | 1992 | Mayer Jacobs | Movie |
| Jonathan: The Boy Nobody Wanted | 1992 | Frank Moore | TV Movie |
| Treacherous Crossing | 1992 | Dr. Johnston | TV Movie |
| Eyes of an Angel | 1991 | Georgie | Movie |
| The Haunted | 1991 | Jack Smurl | TV Movie |
| By Dawn's Early Light | 1990 | Harpoon | TV Movie |
| Crash: The Mystery of Flight 1501 | 1990 | Scott Cody | TV Movie |
| Law & Order | 1990 | Defense Attorney Professor Norman Rothenberg | TV Show |
| Blaze | 1989 | Tuck | Movie |
| Peacemaker | 1989 | Daniel Cooper | Short Film |
| Settle the Score | 1989 | Dr. Josh Longcrest | TV Movie |
| Betrayed | 1988 | Flynn | Movie |
| The Blob | 1988 | Sheriff Herb Geller | Movie |
| Lincoln | 1988 | William Herndon | TV Show |
| Windmills of the Gods | 1988 | Rogers | TV Show |
| Dear John | 1988 | Neil Cramer | TV Show |
| CBS Summer Playhouse | 1987 | Nate Goodman | TV Show |
| American Experience | 1987 | Reporter, Sylacauga News | TV Show |
| Kojak: The Price of Justice | 1987 | Marsucci (as Jeffrey De Munn) | TV Movie |
| The Hitcher | 1986 | Captain Esteridge | Movie |
| Who Is Julia? | 1986 | Dr. David Matthews | TV Movie |
| L.A. Law | 1986 | Peter Reynolds | TV Show |
| Warning Sign | 1985 | Dr. Dan Fairchild (as Jeffrey De Munn) | Movie |
| A Time to Live | 1985 | Larry Weisman | TV Movie |
| Doubletake | 1985 | Andrew Lane | TV Show |
| American Masters | 1985 | Eugene O'Neill | TV Show |
| Moonlighting | 1985 | Roger Clements | TV Show |
| Spenser: For Hire | 1985 | Jacob Zaleski | TV Show |
| The Twilight Zone | 1985 | Bob Spindler (segment "Kentucky Rye") | TV Show |
| Windy City | 1984 | Bobby | Movie |
| When She Says No | 1984 | Brian Garvey | TV Movie |
| Enormous Changes at the Last Minute | 1983 | Ricardo | Movie |
| I Married Wyatt Earp | 1983 | Doc Holliday (as Jeffrey De Munn) | TV Movie |
| The Face of Rage | 1983 | Jeff Hammil | TV Movie |
| Sessions | 1983 | Dr. Walter Hemmings | TV Movie |
| O'Malley | 1983 | Carl | TV Movie |
| Frances | 1982 | Clifford Odets | Movie |
| I'm Dancing as Fast as I Can | 1982 | Doctor Roberts | Movie |
| A Midsummer Night's Dream | 1982 | Bottom | TV Movie |
| Ragtime | 1981 | Houdini (as Jeff Demunn) | Movie |
| Word of Honor | 1981 | Dist. Atty. Burke (as Jeff DeMunn) | TV Movie |
| Hill Street Blues | 1981 | Jerry Goff | TV Show |
| Resurrection | 1980 | Joe | Movie |
| The First Deadly Sin | 1980 | Sergeant Fernandez Correlli | Movie |
| Christmas Evil | 1980 | Philip Stadling | Movie |
| American Playhouse | 1980 | Peter / George Pierce Baker / George / ... | TV Show |
| King Crab | 1980 | Sam Campana (as Jeffrey De Munn) | TV Movie |
| Sanctuary of Fear | 1979 | Whitney Fowler | TV Movie |
| Mourning Becomes Electra | 1978 | Captain Adam Brant | TV Show |
| The Last Tenant | 1978 | Vinnie | TV Movie |
| The Magical World of Disney | 1954 | Adult Harry Houdini | TV Show |
