Is Sean Harmon Related to Mark Harmon? The Truth About the Father-Son Duo

If you are a fan of the popular crime drama series NCIS, you might have wondered if the actor who plays the young version of Leroy Jethro Gibbs is related to the actor who plays the older version. The answer is yes: Sean Harmon is the son of Mark Harmon, the star of NCIS. Here is everything you need to know about the father-son duo and their careers.

Who is Sean Harmon?

Sean Harmon was born on April 25, 1988 in Burbank, California, USA. He is the eldest son of Mark Harmon and his wife, actress Pam Dawber, who is best known for her role in Mork & Mindy. Sean has a younger brother named Ty Christian Harmon, who is also a screenwriter.

Sean followed in his parents’ footsteps and became an actor and producer. He has appeared in several TV shows and movies, such as CSI: NY, Major Crimes, Thicker, Dumb & Dumber To, and American Reunion. He is also a stuntman and has performed stunts for his father on NCIS.

How did Sean Harmon get to play the young Gibbs on NCIS?

Sean Harmon made his debut as the young Gibbs on NCIS in 2008, in the episode “Heartland”. He reprised his role in several flashback scenes in later episodes, such as “Deliverance”, “Mother’s Day”, “Engaged (Part II)”, “Life Before His Eyes”, “Extreme Prejudice”, and “Everything Starts Somewhere”.

According to Ned Hardy, Sean Harmon got the opportunity to play the young Gibbs after he auditioned for the role and impressed the producers with his resemblance and mannerisms to his father. He also received some tips from his father on how to portray the character.

What is the relationship between Sean Harmon and Mark Harmon?

Sean Harmon and Mark Harmon have a close and supportive relationship as father and son. They share a passion for acting and surfing, and often spend time together on set or at home. Mark Harmon has praised his son’s work ethic and talent, and has said that he is proud of him.

According to Nicki Swift, Mark Harmon and Pam Dawber have been married for more than 30 years, and have raised their sons away from the spotlight. They value their privacy and family life, and do not use social media or give many interviews. Mark Harmon has said that he and his wife are “not into that” and that they “stay home” a lot.


Sean Harmon is indeed related to Mark Harmon: he is his son. He is also an actor and producer, who has played the younger version of his father’s character on NCIS. He has a close bond with his father, who is also his mentor and role model. They are part of a happy and low-key family in Hollywood.

Doms Desk

Leave a Comment