What We Left Behind: Looking Back at Star Trek: Deep Space Nine
- Gads: 2018
- Valsts: United States of America
- Žanrs: Documentary
- Studija: 455 Films, Le Big Boss Productions
- Atslēgvārds: television history, science fiction
- Direktors: David Zappone, Ira Steven Behr
- Lomās: Avery Brooks, Terry Farrell, Michael Dorn, René Auberjonois, Nana Visitor, Alexander Siddig