Thomas Mark Harmon (born September 2, 1951) is an American actor.
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Mark Harmon Returning to NCIS: Origins 4 Years After Franchise Exit
'NCIS: Origins' Crossover Event With 'NCIS': Mark Harmon to Return as Leroy Jethro Gibbs - Episode Date & Details!
Mark Harmon Returns as Gibbs in 'NCIS: Origins' and 'NCIS' Crossover Special
‘NCIS’ Star Mark Harmon to Return as Gibbs in ‘NCIS: Origins’ During Veterans Day Crossover
‘NCIS: Origins’ To Feature Guest Appearance By Mark Harmon During Crossover Event With ‘NCIS’
11 Actors Were Considered to Play Leroy Jethro Gibbs on 'NCIS' Before Mark Harmon Was Cast (Including Two Oscar Winners!)
11 Actors Were Considered to Play Leroy Jethro Gibbs on 'NCIS' Before Mark Harmon Was Cast (Including 2 Oscar Winners!)
11 Actors Were Considered to Play Leroy Jethro Gibbs on 'NCIS' Before Mark Harmon (There Are 2 Oscar Winners On The List!)
Mark Harmon Got ‘Bored Real Fast’ With Retirement Post ‘NCIS’: He’s Looking for a ‘Fresh Start’
NCIS: Origins' Austin Stowell Got Feedback From Mark Harmon on the Spot
NCIS: Origins' Kyle Schmid Shares Mark Harmon's Advice for Playing Franks
Mark Harmon ‘Still Very Immersed’ in ‘NCIS’: He ‘Must Have a Say in Everything’
11 Famous Actors Were Considered to Play Gibbs on 'NCIS' Before Mark Harmon (There Are 2 Oscar Winners On The List!)
'NCIS: Origins' TV Show Gives Present-Day Gibbs Update, Reveals Where Mark Harmon's Character Is Now
Mark Harmon Reveals the Huge Compliment Paid to Austin Stowell After His 'NCIS: Origins' Audition!
Mark Harmon ‘There to Help’ Behind Camera as 'NCIS' Prequel Producer
Mark Harmon Explains Why His Son Sean Isn't Playing Young Gibbs in 'NCIS: Origins' Series
Mark Harmon on Returning to ‘NCIS: Origins’ After Choosing to Leave Franchise — and Why His Son Isn’t Portraying Young Gibbs in Prequel
Mark Harmon’s Pampering On ‘NCIS: Origins’ Set Has Got Costars on the New Show ‘In a Cranky Mood’
Mark Harmon Returns as Gibbs for 1st Time Since 2021 in ‘NCIS: Origins’
