The Diamond District is a district located in Gotham City.
During No Man's Land, the Gotham City Public Library in the Diamond District was taken over by the Riddler who then used the building as his base for the following months. Nygma's headquarters at the library were invaded on at least two occasions, the first being an attack by Jim Gordon and Eduardo Dorrance who tried to arrest Nygma for the murders at Haven. A few weeks later, the Public Library was invaded by the Ventriloquist and Scarface.
- In the DC Comics, the Diamond District is one of the main districts in Gotham City.
- Gotham marked the first live-action appearance of the Diamond District.
- The exact location of the Public Library in Gotham's Diamond District was revealed on Edward Nygma's map in the episode "Legend of the Dark Knight: Year Zero".
- Heller, Bruno (writer) & Cannon, Danny (director) (September 29, 2014). "Selina Kyle". Gotham. Season 1. Episode 2. FOX.
- Chun, Tze (writer) & Bailey, Rob (director) (May 10, 2018) "A Dark Knight: One Bad Day" Gotham. Season 4. Episode 21.
- Stephens, John (writer) & Cannon, Danny (director) (January 3, 2019) "Legend of the Dark Knight: Year Zero" Gotham. Season 5. Episode 1.
- Sosa, Iturri (writer) & Tonderai, Mark (director) (January 31, 2019) "Legend of the Dark Knight: Pena Dura" Gotham. Season 5. Episode 5.
- Boston, Seth (writer) & Fink, Kenneth (director) (February 28, 2019) "Legend of the Dark Knight: Nothing's Shocking" Gotham. Season 5. Episode 8.