NCIS
NCIS ran for a total of 21 seasons.Specials
Specials was released on April 22, 2003 and ran for 130 episodes.
Season 1
Season 1 was released on September 23, 2003 and ran for 23 episodes.
Season 2
Season 2 was released on September 28, 2004 and ran for 23 episodes.
Season 3
Season 3 was released on September 20, 2005 and ran for 24 episodes.
Season 4
Season 4 was released on September 19, 2006 and ran for 24 episodes.
Season 5
Season 5 was released on September 25, 2007 and ran for 19 episodes.
Season 6
Season 6 was released on September 23, 2008 and ran for 25 episodes.
Season 7
Season 7 was released on September 22, 2009 and ran for 24 episodes.
Season 8
Season 8 was released on September 21, 2010 and ran for 24 episodes.
Season 9
Season 9 was released on September 20, 2011 and ran for 24 episodes.
Season 10
Season 10 was released on September 25, 2012 and ran for 24 episodes.
Season 11
Season 11 was released on September 24, 2013 and ran for 24 episodes.
Season 12
Season 12 was released on September 23, 2014 and ran for 24 episodes.
Season 13
Season 13 was released on September 22, 2015 and ran for 24 episodes.
Season 14
Season 14 was released on September 20, 2016 and ran for 24 episodes.
Season 15
Season 15 was released on September 26, 2017 and ran for 24 episodes.
Season 16
Season 16 was released on September 25, 2018 and ran for 24 episodes.
Season 17
Season 17 was released on September 24, 2019 and ran for 20 episodes.
Season 18
Season 18 was released on November 17, 2020 and ran for 16 episodes.
Season 19
Season 19 was released on September 20, 2021 and ran for 21 episodes.
Season 20
Season 20 was released on September 19, 2022 and ran for 22 episodes.