Written by 4:44 am Biography, Movie Star

Sean Harmon biography | Mark Harmon’s son

Who is Sean Harmon?

Sean Harmon is an American actor, director, and stunt coordinator. He is also the first son of actor Mark Harmon and actress Pamela Dawber.

He is famous for his role in NCIS, where he plays a character named Gibbs, a younger version of his father’s character in the series.

Sean Harmon Biography, net worth, family and career
Sean Harmon Biography

Here is everything you need to know about Sean Harmon’s personal and professional life.

Quick facts

Full nameSean Thomas Harmon
BirthdateApril 25, 1988
Age33 years old
Sun signAries
TraitsAries male traits

Positive– fearless warrior, disciplined, and extrovert

Negative– Lack of patience, temper, impulsive and assertive
Height5’11” inches (182 cm)
BirthplaceBurbank, California, USA
Currently residingBurbank, California, USA
NationalityUS citizen
EducationNotre Dame High
ParentsMark Thomas Harmon (father),
Pamela Dawber (mother)
GrandparentsThomas Dudely Harmon (paternal grandfather),
Elyse Knox (paternal grandmother)
AuntsKristin Nelson,
Kelly Harmon
SiblingsTy Christian Harmon (younger brother)
CousinsTracy Nelson,
Same Nelson,
Mathew Nelson,
Gunner Nelson
Marital statusEngaged
SpouseCourtney Prather (soon to be wife)
Hair colorBrown
Eye colorGrey
Net worthUSD 10 million
ProfessionActor, stunt Coordinator, stunt player, writer, producer, and director


Sean Harmon was born on April 25, 1988, in Burbank, California.

Mark Harmon and Pam Dawber parents of Sean
Mark Harmon and Pam Dawber- Parents of Sean

Mark Thomas Harmon (Father)

His father, Mark Thomas Harmon, is one of the highest-paid TV actors and is best known for his role in a TV show called St. Elsewhere and his role in Chicago Hope and NCIS.

Pamela Dawber (Mother)

On the other hand, Pamela Dawber has also worked on several hit projects like Mork & Mindy and My Sister Sam.

Ty Christian Harmon (Younger brother)

Sean Harmon has a younger sibling named Ty Christian Harmon (born on June 25, 1992), who also works in the entertainment industry as an actor, screenwriter, and even director. His first acting gig was him starring in a short film called ‘Catholic Schoolgirl Chainsaw Showdown,’ an action-horror film directed by himself.

Ty Christian Harmon brother of Sean Harmon
Ty Christian Harmon with his girlfriend

Thomas Dudely Harmon (Grandfather)

Apart from his parents and sibling, he also has many talented and famous family members. Tom Harmon (Thomas Dudely Harmon) is a star college football player in Michigan’s Wolverine history. Tom Harmon also worked as a sports broadcaster in ABC and American Information Radio networks.

sean harmon grandfather Tom Harmon and grandmother Elyse Knox
Sean’s grandparents

Elyse Knox (Grandmother)

Likewise, his grandmother, Elyse Knox, was a ’90s American fashion designer, model, and actress who has worked in hit movies like ‘The Mummy’s Tomb’ and ‘Hit the Race.’

Sean Harmon selfie
Sean Harmon selfie

Furthermore, his aunts are famous actresses/painter Kristin Nelson and actress/model Kelly Harmon. Likewise, his first cousins include Tracy Nelson, Sam Nelson, Mathew Nelson, and Gunner Nelson.


Sean Harmon has turned 33 this year. Based on his birth date, he is a Taurus. A Taurus born on this day of the month is known to have a loving nature, are committed, and have strong determination. Such traits might explain he has been working hard to create his own identity without his father’s help.

He holds an American nationality and is ethnically white. He has a beautiful pair of grey eyes, brown hair, and a charming smile, just like his father.

Read about the model and influencer Janet Guzman here

He is 5’11” inches (182 cm) and is muscular with a mesomorph body type. Asides from his acting career, Sean also likes to kick-box and surf.


Both Sean and his brother attended Notre Dame High, a private school in Sherman Oaks, California. Since there is no university record, he attended we are assuming that he just followed his parent’s footsteps instead and started his career at an early age after graduating from high school.

Sean Harmon relationships

Courtney Prather (fiancée)

Courtney Prather showing her engagement ring given by Sean

Sean Harmon was dating Courtney Prather. He has been open about showing his affection for Courtney on social media. On October 30, 2012, Sean was first seen with Courtney Prather at his date for the inauguration ceremony for Mark Harmon at the Hollywood Walk of Fame in Los Angeles, California.

Sean Harmon proposes Courtney
Sean proposing Courtney for marriage

On July 9th, 2021, Sean proposed Courtney, to which she welcomed and accepted with arms open wide. They both are officially engaged now. However, they haven’t decided on the wedding date and the theme.

Movies and TV shows

Being born into a family involved in the entertainment industry, it was evident for Sean to pursue his career as an actor. His family was fully supportive of his decision.

In five episodes, Sean bagged his first gig in a TV series called NCIS, where he played a recurring character as a young version of Special Agent Leroy Jethro Gibbs (played by his father).

Sean Harmon in video shoot
Sean shooting a TV series

Special Agent Gibbs was introduced in a guest role in the two episodes of JAG.

NCIS is an action/police television series that focuses on Agent Gibbs from the Naval Criminal Investigative Service. The show includes several famous actors like Wilmer Valderrama, Pauley Perrette, Sean Murray, and Michael Weatherly.

Due to Sean’s role as the Young Gibbs in the series, several fans were impressed and even noticed how he almost looked like his father. Many claimed that he was the spitting image of his father in his younger years.

Sean appeared in NCIS following episodes: ‘Life Before His Eyes,’ ‘Engaged: Part I,’ ‘Engaged: Part II,’ ‘Mother’s Day,’ ‘Deliverance,’ and ‘Heartland.’

Few know that at the age of 15, he has worked in Harts of the West.

After his role in NCIS as Young Gibbs, Sean appeared in another series called CSI: NY as a character named Ethan Grohl. Like NCIS, the series is based on a police investigation and looks at how a police team tries to solve a crime using forensic sciences in New York.

He has also appeared in ‘NCIS: Los Angeles’ in 2015 as Charlie Connor, where he played the role of Sgt, Terry Scott. His more recent works include movies like ‘Alina’ and ‘Hold On,’ both released in 2019.

Besides acting in movies, you must have caught the stunt work of Sean. He likes working as a stunt double, stunt coordinator, writing, producing, and directing movies.

Sean Harmon in his bike
Sean Harmon in a sports bike posing for Instagram

Sean worked as a stunt player in an adult comedy movie called ‘American Reunion’ in 2012. The director of the movie was Jon Hurwitz and Hayden Schlossberg.

It is the fourth series of the famous movie called American Pie. The film revolves around reuniting the high-school reunion after decades. Other than Sean, the video included actors like Jason Biggs and Seann William Scott.

He has also written, directed, produced, and coordinated stunts for a short film called Catholic Schoolgirl Chainsaw Showdown in 2012. The movie is about Catholic school girls battling each other with a chainsaw duel. Aside from that, he has worked as a stunt performer in several films.

In 2014, he was a stunt performer for a movie called Dumb and Dumber which starred actors like Jim Carrey and Jeff Daniels. Some of the other projects where he has worked as a stunt performer include Takanakuy (2015), The Sweet Taste of Redemption (2015), Into the Equinox (2016), The Labyrinth (2017), and Golden Revenge (2018).

Harmon is actively involved in behind-the-scenes more working on movie stunts.
Besides his past work, Sean will appear in a TV movie called Thicker Than Thieves, which is in post-production. The film will be about a young group of people chasing the same goal.

List of Movies and TV series

2008-2012TV seriesNCISYoung Leroy Jethro Gibbs
2011ShortAgent Mx-z3RoStunt coordinator/ Stunt performer
2012TV series CSI: NYAs Ethan Grohl
2012TV series RebelStunt coordinator
2012MovieAmerican ReunionStunt Player
2012MovieCatholic Schoolgirl Chainsaw ShowdownStunt coordinator/ Writer/ Producer/Director
2013ShortMicroAs Tyler/ Stunt coordinator
2013TV seriesLaurenAs Romero
2013ShortLady of RAGEStunt coordinator
2014ShortThe CompatibleAs Jamie Jones
2014MovieDumb and Dumber ToStunt performer
2015TV series NCIS: Los AngelesAs Charlie Connor
2015TV series The Ultimate EvilAs Jake
2015TV seriesMajor CrimesAs Felix Koster
2015MovieThe FitsAs Karisma’s dad
2015ShortTakanakuyAs Dennis Brown/ Stunt coordinator
2015TV SeriesHaven: OriginsAs a Frank / Stunt player
2015ShortThe Sweet Taste of RedemptionStunt coordinator
2016ShortTen Thousand MilesAs SGT Terry Scott
2016MovieInto the EquinoxStunt Rigger
2017MovieThe LabyrinthStunt coordinator
2018ShortThe Dead ManStunt Double for Dominic Bogart
2018TV SeriesGolden RevengeStunt coordinator
2019ShortAlinaAs HenrykFirstGlance Film Festival– Best Ensemble Cast- Short Film (Nominee)

Independent Short Awards– Best Acting Ensemble
2019MovieHold onAs Mac
2020MovieThe Downside of BlissStunt player
2020MovieThicker Than ThievesAs Jones

Sean Harmon Net worth

Sean Harmon’s net worth is estimated to be around $10 million. He has earned his wealth from movies and tv shows. Likewise, he also worked in several films as a stunt performer and stunt coordinator.

On the other hand, his father, Mark Harmon’s net worth stands at $90 million, earning about $525,000 per episode.

Likewise, Sean’s mother, Pamela Dawber, also has a net worth of $10 million, which she gained from working as a model and actress before she retired to spend time and focus on her family.

Sean Harmon social media

Sean has an account on Instagram, but he doesn’t seem to be active much.

Sean Harmon now

Sean is quite talented and successful. He has bagged several movies and TV series gigs due to his work ethic and talent. Likewise, Sean also does exceptional work as a stunt performer and coordinator.

We can say for sure that he is a hardworking professional person.

At present, he is devotedly giving time to his career and working on new projects.

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Is Sean Harmon Married?

Many fans are curious about his love life and to know if he is already married. Here’s a piece of good news and bad news. Sean is not married yet, but he is in a relationship with a fitness guru and storyteller, Courtney Prather. He proposed to her in his ranch on July 9, 2021.

Sean Harmon is the eldest son of Mark Harmon. Sean Harmon played the younger version of his dad’s character as Leroy Jethro Gibbs in NCIS.

Does Mark Harmon have an actor son?

Mark Harmon has two sons, Sean Harmon and Ty Christian Harmon. Sean Harmon is the eldest son who has pursued acting as his career just like his father. He is best known for his character as Gibb’s younger version in NCIS.

Mark’s younger son, Ty Christian, is a screenwriter.

Who is Sean Harmon’s mother?

Sean Harmon’s mother is Pamela Dawber. Like his father, Mark, his mother is also an American actress renowned for Mindy McConnell’s character in a television sitcom named “Mork & Mindy.” My Sister Sam, Stay Tuned, and Bewitched are some of the other shows that she has been a part of.