January 8, 2023- Blood Bank (episode), the NCIS: Los Angeles Season 14 episode airs for the first time.
January 9, 2023- Too Many Cooks (episode), the NCIS Season 20 episode airs for the first time. It is the first part of the NCIS/NCIS: Hawaii/NCIS: Los Angeles crossover.
January 9, 2023- Deep Fake (episode), the NCIS: Hawaii Season 2 episode airs for the first time. It is the second part of the NCIS/NCIS: Hawaii/NCIS: Los Angeles crossover.
January 9, 2023- A Long Time Coming (episode), the NCIS: Los Angeles Season 14 episode airs for the first time. It is the third and final part of the NCIS/NCIS: Hawaii/NCIS: Los Angeles crossover.
January 15, 2023- Best Seller (episode), the NCIS: Los Angeles Season 14 episode airs for the first time.
January 16, 2023- Bridges (episode), the NCIS Season 20 episode airs for the first time.
January 16, 2023- Rising Sun (episode), the NCIS: Hawaii Season 2 episode airs for the first time.
May 8, 2023- Nightwatch Two (episode), the NCIS: Hawaii Season 2 episode airs for the first time.
May 14, 2023- New Beginnings (episode), the NCIS: Los Angeles Season 14 episode airs for the first time.
May 15, 2023- Kompromat (episode), the NCIS Season 20 episode airs for the first time.
May 15, 2023- Past Due (episode), the NCIS: Hawaii Season 2 episode airs for the first time.
May 21, 2023- New Beginnings Part 2 (episode), the NCIS: Los Angeles Season 14 episode airs for the first time. It is also the series finale/last ever episode of the entire NCIS: Los Angeles series.
May 22, 2023- Black Sky (episode), the NCIS Season 20 episode airs for the first time.
May 22, 2023- Dies Irae (episode), the NCIS: Hawaii Season 2 finale episode airs for the first time.