Mark Harmon
Filmography

| Year | Title | Role | Other notes |
| --- | --- | --- | --- |
| 1973 | Ozzie's Girls | The Candidate |  |
| 1975 | Emergency! | Officer Dave Gordon | Episode: "905-Wild" |
| 1975 | Adam-12 | Officer Gus Corbin | Episode: "Gus Corbin" |
| 1975 | Police Woman | Paul Donin | Episode: "No Place to Hide" |
| 1976 | Laverne & Shirley | Victor, Jeep Buyer | Episode: "Dating Slump" |
| 1976 | All's Fair |  | Episode: "Jealousy" |
| 1976 | Police Woman | Stansky | Episode: "Tender Soldier" |
| 1976 | Delvecchio | Ronnie Striker | Episode: "Hot Spell" |
| 1977 | Eleanor and Franklin: The White House Years | Robert Dunlap | TV movie Nominated — Primetime Emmy Award for Outstanding Supporting Actor – Miniseries or a Movie |
| 1977 | The Hardy Boys/Nancy Drew Mysteries | Chip Garvey | Episode: "Mystery of the Solid Gold Kicker" |
| 1978 | Sam | Officer Mike Breen | 7 episodes |
| 1978 | Getting Married | Howie Lesser | TV movie |
| 1978 | Little Mo | Norman Brinker | TV movie |
| 1978 | Comes a Horseman | Billy Joe Meynert |  |
| 1978–1979 | Centennial | Captain John McIntosh | 3 episodes |
| 1979 | Beyond the Poseidon Adventure | Larry Simpson |  |
| 1979–1983 | The Love Boat | Doug Bradbury | 3 episodes |
| 1979–1980 | 240-Robert | Deputy Dwayne "Thib" Thibideaux | Main character, 13 episodes |
| 1980 | Flamingo Road | Fielding "Field" Carlyle | TV movie |
| 1980 | The Dream Merchants | Johnny Edge |  |
| 1981 | Goliath Awaits | Peter Cabot | TV movie |
| 1981–1982 | Flamingo Road | Fielding "Field" Carlyle | Main character, 37 episodes |
| 1983 | Doctor in Paradise | Tommy |  |
| 1983–1986 | St. Elsewhere | Dr. Robert Caldwell | Main character, 70 episodes |
| 1984 | Tuareg - The Desert Warrior | Gacel Sayah |  |
| 1986 | Prince of Bel Air | Robin Prince | TV movie |
| 1986 | The Deliberate Stranger | Ted Bundy | TV movie Nominated — Golden Globe Award for Best Actor – Miniseries or Television Film |
| 1986 | Let's Get Harry | Harry Burck, Jr. |  |
| 1987 | Moonlighting | Sam Crawford | 4 episodes |
| 1987 | Summer School | Freddy Shoop |  |
| 1987 | After the Promise | Elmer Jackson | TV movie Nominated — Golden Globe Award for Best Actor – Miniseries or Television Film |
| 1988 | The Presidio | Jay Austin |  |
| 1988 | Stealing Home | Billy Wyatt |  |
| 1989 | Sweet Bird of Youth | Chance Wayne | TV movie |
| 1989 | Worth Winning | Taylor Worth |  |
| 1990 | Till There Was You | Frank Flynn |  |
| 1990 | Kenny Rogers Classic Weekend | Himself |  |
| 1991 | Dillinger | John Dillinger | TV movie |
| 1991 | Fourth Story | David Shepard | TV movie |
| 1991 | Long Road Home | Ertie Robertson | TV movie |
| 1991 | Shadow of a Doubt | Uncle Charlie Oakley |  |
| 1991 | Cold Heaven | Alex Davenport |  |
| 1991–1993 | Reasonable Doubts | Detective Dicky Cobb | Main character, 45 episodes Nominated — Golden Globe Award for Best Actor – Television Series Drama (1991) Nominated — Golden Globe Award for Best Actor – Television Series Drama (1992) |
| 1993 | Harts of the West | Rodeo clown | Episode: "The Right Stuff" |
| 1994 | Natural Born Killers | Uncredited |  |
| 1994 | Wyatt Earp | Sheriff John Behan |  |
| 1995 | Original Sins | Johnathan Franye | TV movie |
| 1995 | Magic in the Water | Jack Black |  |
| 1995 | The Last Supper | Dominant Male |  |
| 1995 | Charlie Grace | Charlie Grace | Main character, 6 episodes |
| 1995 | Acts of Contrition | Jonathan Frayne | Movie |
| 1996 | Strangers | Mark | Episode: "Visit" |
| 1996–2000 | Chicago Hope | Dr. Jack McNeil | Main character, 95 episodes Nominated — Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama Series (1996) Nominated — Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama Series (1997) |
| 1997 | Adventures from the Book of Virtues | Ulysses | Episode: "Perseverance" |
| 1997 | Casualties | Tommy Nance |  |
| 1997 | The First to Go | Jeremy Hampton |  |
| 1998 | From the Earth to the Moon | Wally Schirra | Episode:  "We Have Cleared the Tower" |
| 1998 | Fear and Loathing in Las Vegas | Magazine Reporter at Mint 400 |  |
| 1999 | I'll Remember April | John Cooper |  |
| 2000 | For All Time | Charles Lattimer |  |
| 2000 | The Amati Girls | Lawrence |  |
| 2001 | Crossfire Trail | Bruce Barkow |  |
| 2001 | And Never Let Her Go | Thomas Capano | TV movie |
| 2001 | The Legend of Tarzan | Bob Markham (voice) | Episode: "Tarzan and the Outbreak" |
| 2002 | Local Boys | Jim Wesley |  |
| 2002 | The West Wing | Special Agent Simon Donovan | 4 episodes Nominated — Primetime Emmy Award for Outstanding Guest Actor – Drama Series |
| 2003 | JAG | Special Agent Leroy Jethro Gibbs | 2 episodes (NCIS pilot episodes) |
| 2003 | Freaky Friday | Ryan |  |
| 2003–present | NCIS | Special Agent Leroy Jethro Gibbs | Current main character, every episode Nominated — People's Choice Award – Favorite TV Drama Actor (2010) Nominated — People's Choice Award – Favorite TV Drama Crime Fighter (2011) |
| 2004 | Chasing Liberty | President James Foster |  |
| 2009 | Weather Girl | Dale |  |
| 2010 | Justice League: Crisis on Two Earths | Superman (voice) | Direct-to-DVD release |
| 2011 | John Sandford's Certain Prey | Deputy Police Chief Lucas Davenport | TV movie |
| 2012 | Family Guy | NCIS Agent (voice) | Season 10 Episode 13 Tom Tucker: The Man and His Dream (Cutaway) |