NCIS has been running for 18 seasons on CBS with a 19th already planned. Although few of the original cast are still involved in the show, aside from Mark Harmon and David McCallum, many stars have appeared in several seasons of the crime drama.
This includes familiar faces like Pauley Perrette and Michael Weatherly who first appeared in the pilot episode 18 years ago.
Now the series is about to enter its 19th season on CBS later this year.
Therefore, viewers have watched many of the stars grow up throughout the seasons.
As a result, some will be curious to know how old they are now compared to when NCIS first began.
How old are the NCIS cast now?
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NCIS cast ages: How old are the cast of NCIS now?
NCIS has been running for 18 seasons on CBS with a 19th already planned.
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Mark has led the NCIS cast as Agent Leroy Gibbs since its first episode aired.
The Hollywood actor is well known for his long career on screen, including performances in The West Wing and St Elsewhere.
When he began starring in NCIS he was 52 and he is currently 69 years old.
David began his career back in the 1940s before making it big in the 1960s.
He is known for appearing in The Man From U.N.C.L.E. as well as rubbing shoulders with stars like Joanna Lumley, Jill Ireland and Diana Rigg.
The actor is now 87-years-old, having been born in September 1933.
Although few of the original cast are still involved in the show, many stars have appeared in several seasons of the crime drama.
Viewers have watched many of the stars grow up throughout the seasons.
Sean Murray first appeared as Timothy McGee back in season one when he was 25.
Now, the star is 43 and is expected to be returning in season 19 of the show as well.
Rocky Carroll stars as NCIS Director Leon Vance in the original show, as well as its spin-offs in Los Angeles and New Orleans.
The star was born back in July 1963, making him 57-years-old.
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Emily Wickersham may have just made her exit from the crime drama, but she has been in the show since 2013.
In real life, the actor is 37-years-old after being born back in 1984.
Special agent Nick Torres star Wilmer Valderrama began his career back in 1988 and has starred in That ‘70s Show and From Dusk till Dawn.
When he first joined NCIS he was only 36-years-old and is now 41.
Cote de Pablo
Cote de Pablo played Ziva David back in the earlier seasons of the show before her exit.
Like her fellow NCIS star Wilmer, Cote is currently aged 41.
Michael was 35-years-old when he first appeared in the pilot for NCIS.
He left the show in 2016 and has since landed his own show called Bull.
Michael was born in July 1968, making him currently 52.
Another original cast member is Pauley Perrette who played Abby Sciuto.
She started on the show when she was 34, and like Michael is aged 52.
Read More: Hollywood News