Mark Harmon – Biography, Age, Wife, Net Worth and Health 2025
Mark Harmon, the actor synonymous with the iconic character Leroy Jethro Gibbs, remains one of television’s most enduring figures. With a career spanning more than five decades, from early roles in primetime dramas to headlining one of the most-watched shows in the world, curiosity about his life, career, and current status shows no sign of waning. This article provides a comprehensive, fact-based look at Mark Harmon’s age, family, net worth, recent projects, and the most frequently asked questions surrounding the private star.
As of 2025, Harmon is 74 years old and remains active in the entertainment industry, both in front of and behind the camera. He continues to expand his legacy with a new film and a production role in the NCIS universe, while maintaining the low-key personal life that has defined his decades in the public eye.
Who Is Mark Harmon? – Age, Background, and Early Life
Mark Harmon is an American actor, producer, and former college football player. He is best known for his portrayal of Special Agent Leroy Jethro Gibbs on the CBS drama NCIS, a role he played for 18 seasons from 2003 to 2021.
74 years old (born Sep 2, 1951)
6’0″ (1.83 m)
Pam Dawber (m. 1987)
$125 million (speculative)
Key Insights at a Glance
- Mark Harmon is best known for playing Leroy Jethro Gibbs on NCIS for 18 seasons (2003–2021).
- He is married to actress Pam Dawber since 1987; they have two sons and a grandson (born 2024).
- Despite recurring absence rumors, Harmon remains active with upcoming film Freakier Friday (2026).
- His net worth is widely estimated at $125M, primarily from NCIS salary and production credits.
- Health concerns have been debunked by official statements; no serious illness confirmed.
Snapshot Facts: Mark Harmon
| Fact | Value |
|---|---|
| Full Name | Thomas Mark Harmon |
| Date of Birth | September 2, 1951 |
| Place of Birth | Burbank, California, USA |
| Height | 6 ft 0 in (1.83 m) |
| Spouse | Pam Dawber (m. 1987) |
| Children | Sean Harmon, Ty Harmon |
| Net Worth (2025 est.) | $125 million (unconfirmed) |
| Most Famous Role | Leroy Jethro Gibbs – NCIS |
| Known Health Issues | None publicly confirmed as of 2025 |
How old is Mark Harmon? (born September 2, 1951)
Mark Harmon was born on September 2, 1951, which makes him 74 years old in 2025. His full name is Thomas Mark Harmon.
What is Mark Harmon’s real name? (Thomas Mark Harmon)
His birth name is Thomas Mark Harmon. He is the youngest of three children born to football star Tom Harmon and actress Elyse Knox. His father won the Heisman Trophy in 1940, and his mother was a well-known film and television actress.
Where was Mark Harmon born? (Burbank, California)
He was born in Burbank, California, a city synonymous with the entertainment industry. He grew up in a household deeply connected to both sports and Hollywood.
Is Mark Harmon still acting? – Current status and recent roles (Freakier Friday 2026)
Yes, Mark Harmon is still acting. After leaving NCIS as a series regular in 2021, he has taken on new roles. He appears as the narrator and plays an older Leroy Jethro Gibbs (uncredited) in NCIS: Origins (2024–2026). He also appears in the 2025 Disney Channel sequel Freakier Friday as the character Ryan.
Mark Harmon’s Career: Top Movies and TV Shows
Mark Harmon’s career spans a diverse range of roles, from medical dramas to action blockbusters. However, his legacy is overwhelmingly defined by his work on the CBS procedural NCIS.
NCIS – Leroy Jethro Gibbs (2003–2021)
Harmon was introduced as NCIS agent Leroy Jethro Gibbs in a 2003 episode of JAG. The character was so popular that it led to a spin-off, NCIS, which ran for 19 seasons. Harmon starred in 18 of those seasons, leaving the show as a regular in 2021. He also served as an executive producer on the series, producing 363 episodes. For more on the show, visit the official NCIS site at CBS.
Notable movies: The Presidio, Freakier Friday (2025), etc.
While television is his primary medium, Harmon has appeared in several films. His notable movie credits include The Presidio (1986) alongside Sean Connery, and the 2025 sequel Freakier Friday. You can find details on that film on Mark Harmon’s IMDb page.
Other TV series: St. Elsewhere, The West Wing, Chicago Hope
Before NCIS, Harmon had prominent roles in highly acclaimed television series. He appeared in St. Elsewhere in the 1980s, Chicago Hope in the 1990s, and had a memorable recurring role as Secret Service Agent Simon Donovan on The West Wing, for which he received an Emmy nomination.
Has Mark Harmon retired from acting?
No. While he stepped back from the day-to-day demands of a lead role on a network series, he has not retired. His continued work as a narrator and executive producer on NCIS: Origins and his role in Freakier Friday confirm he remains professionally active.
Mark Harmon played college football as a quarterback at the University of California, Los Angeles (UCLA). He was drafted by the NFL but chose to pursue an acting career instead.
How Tall Is Mark Harmon?
Mark Harmon stands at 6 feet 0 inches (1.83 meters) tall.
Mark Harmon’s height in feet and inches (6’0″ / 1.83 m)
His height has often been a point of curiosity among fans. At 6’0″, he fits the physical profile of a leading man and former athlete.
Height comparison with other NCIS cast members
While specific comparisons are subjective, Harmon’s height is average for the ensemble cast of NCIS, which has included actors of varying statures over its long run.
Mark Harmon’s Net Worth and Income
Mark Harmon’s financial success is a common topic of speculation. While exact figures are not publicly confirmed, financial estimates are widely circulated based on his long-running television work.
Estimated net worth ($125 million – common estimate)
The most commonly cited estimate for Mark Harmon’s net worth is approximately $125 million. It is important to note that this figure is speculative and has not been confirmed by Harmon or any official financial disclosure.
NCIS salary details (reportedly $10–12 million per season)
During his tenure on NCIS, Harmon was reportedly one of the highest-paid actors on broadcast television. His salary was estimated to be between $10 million and $12 million per season, a figure that reflected his status as both the star and an executive producer of the show.
Other income sources: production, endorsements
Beyond acting, Harmon has generated income through his production company, Wings Productions, and his role as an executive producer on the NCIS franchise, including the spin-off NCIS: Origins.
Mark Harmon’s Personal Life: Wife, Children, and Family
Mark Harmon is known for keeping his personal life exceptionally private, a deliberate choice that has allowed him to maintain a stable and low-profile family life away from the Hollywood spotlight.
Marriage to Pam Dawber (married 1987 to present)
Harmon has been married to actress Pam Dawber since March 21, 1987. Dawber is best known for her starring role in the sitcom Mork & Mindy alongside Robin Williams. They were married in a private ceremony at a school chapel in Studio City, California.
Two sons: Sean and Ty Harmon
The couple has two sons. Sean Thomas Harmon, born in 1988, is an actor and director who famously played a younger version of his father’s character, Gibbs, in flashback scenes on NCIS. Ty Christian Harmon, born in 1992, is a Hollywood screenwriter.
Grandson (born 2024)
Mark Harmon became a grandfather in 2024. This recent family addition was noted in media coverage, though the family has kept the details private.
Family legacy: father Tom Harmon, football star
Harmon’s father, Tom Harmon, was a legendary figure in American college football, winning the Heisman Trophy in 1940. His mother, Elyse Knox, was an actress and model. This unique blend of athletic and Hollywood lineage shaped his early life.
Mark Harmon and Pam Dawber’s marriage is one of the longest-running in Hollywood. They have been together for nearly four decades, a rarity in the entertainment industry, and they attribute their stability to a shared desire for a normal, private life away from the press.
Mark Harmon’s Health: Is He Ill?
Questions about Mark Harmon’s health have surfaced online, often fueled by his reduced public presence after leaving NCIS. The available facts provide a clear picture.
Health rumors and clarifications: no public confirmed serious illness
There are no public reports or official statements confirming a significant health condition affecting Mark Harmon in 2025 or 2026. He remains active professionally, currently working as an executive producer and narrator.
NCIS departure in 2021 attributed to character arc, not health
Harmon’s departure from NCIS in 2021 was widely reported as a narrative decision to conclude his character’s story arc, rather than a result of any health issue. The producers and network have not linked his exit to a medical condition.
Recent appearance at Freakier Friday premiere – looking healthy
Harmon’s public appearances, including promotional events for Freakier Friday, have shown him appearing in good health, consistent with his ongoing professional commitments.
Key Career Milestones: A Timeline of Mark Harmon’s Life
The following timeline highlights the major events in Mark Harmon’s personal and professional life. For another detailed biography, see our article on John Krasinski – Biography, Net Worth, and Career Highlights.
- 1951: Born in Burbank, CA, to football star Tom Harmon and actress Elyse Knox.
- 1970s: Plays college football at UCLA; briefly considered a professional football career.
- 1978: First major acting role in TV movie *The Love Boat*.
- 1986: Stars in *The Presidio* alongside Sean Connery.
- 1987: Marries actress Pam Dawber (*Mork & Mindy*).
- 1990s: Notable roles in *St. Elsewhere*, *The West Wing*, and *Chicago Hope*.
- 2003: Begins role as Leroy Jethro Gibbs on *NCIS*.
- 2008: Son Sean Harmon appears on *NCIS* as young Gibbs.
- 2021: Leaves *NCIS* after 18 seasons; character retired.
- 2022: Makes guest appearance on *NCIS* in 2023.
- 2024: Becomes a grandfather.
- 2026: Returns to screen in *Freakier Friday* with Jamie Lee Curtis and Lindsay Lohan.
Separating Fact from Rumor: What We Know and What Is Unclear
Several aspects of Mark Harmon’s life are subject to public speculation. This comparison clarifies what is established fact versus what remains unconfirmed.
| Topic | Status |
|---|---|
| Health Condition | Uncertain – no credible public disclosure of major illness. Rumors likely exaggerated. |
| Net Worth | Uncertain – figures like $125M are widely cited but not confirmed by Harmon or official filings. |
| Retirement | Certain – left NCIS as series regular (2021) but continues acting (Freakier Friday 2026). |
| Return to NCIS | Uncertain – producers have left door open, but no official announcement as of 2025. |
Cultural Impact and Professional Legacy
Mark Harmon’s impact on television is significant. His portrayal of Leroy Jethro Gibbs created an iconic TV detective that influenced the police procedural genre. The character’s stoicism, moral code, and leadership style became a template for many subsequent shows. For a similar in-depth look at another actor, see our article on John Krasinski – Biography, Net Worth, and Career Highlights.
Beyond acting, Harmon has extended his influence behind the camera. He has produced episodes and spin-offs, contributing to the longevity of the NCIS franchise. His marriage to Pam Dawber, one of Hollywood’s longest-lasting, offers a notable contrast to celebrity culture, and his deliberate privacy has only increased his mystique and public appeal.
Sources and Quotes
The following quotes come from credible interviews and official sources cited in the research for this article.
“The NCIS and Freakier Friday actor and the Mork & Mindy actress have been married for nearly 40 years and share two sons, and now a grandson!”
– Hello! Magazine (May 2025)
“It’s been an honor. The show has given me more than I could ever repay.”
– Mark Harmon on his NCIS departure (2021 interview)
“Thomas Mark Harmon (born September 2, 1951) is an American actor, writer, producer, television director and former football player.”
– Wikipedia (biography)
Where Is Mark Harmon Now? Summary
Mark Harmon is alive, well, and professionally active in 2025–2026. His legacy as the star of NCIS is secure, but he continues to build upon it. He is currently an executive producer and narrator for the spin-off series NCIS: Origins, and he returned to the big screen in the 2025 Disney sequel Freakier Friday.
For similar in-depth biographies, you can read our article on John Krasinski – Biography, Net Worth, and Career Highlights.
Frequently Asked Questions About Mark Harmon
What is Mark Harmon’s real name?
Thomas Mark Harmon.
When did Mark Harmon leave NCIS?
He left the series as a regular in 2021, though he made a guest appearance in 2023.
Does Mark Harmon have any siblings?
Two sisters: Kelly Harmon (actress) and Kristin Nelson (artist).
Is Mark Harmon related to any other celebrities?
He is the son of football legend Tom Harmon and actress Elyse Knox; his brother-in-law is actor Ricky Nelson.
What is Mark Harmon’s height in centimeters?
183 cm.
Did Mark Harmon play football?
Yes, he played quarterback for UCLA in college and was drafted by the NFL but chose acting.
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