Elenco principal da temporada 9

1. 

   Mark Harmon

   Leroy Jethro Gibbs

2. 

   Sean Murray

   Timothy McGee

3. 

   Wilmer Valderrama

   Nick Torres

4. 

   Brian Dietzen

   Jimmy Palmer

5. 

   David McCallum

   Dr. Donald 'Ducky' Mallard

6. 

   Emily Wickersham

   Ellie Bishop

7. 

   Maria Bello

   Jack Sloane

8. 

   Rocky Carroll

   Leon Vance

9. 

   Diona Reasonover

   Kasie Hines

Convidados Especiais 6

1. 

   Christopher Lloyd

   Joseph Smith

2. 

   Peter Murnik

   Navy Four-Star Admiral Michael Caplinger

3. 

   Jessica Tuck

   Gloria Caplinger

4. 

   Sebastian Sozzi

   Kevin Deacon

5. Dawn Matthews

   Dr. Alice Jelani

6. Sofie Calderon

   Joan

Equipa técnica 2