Underworld
- Blwyddyn: 2001
- Gwlad: United States of America
- Genre: Action, Horror
- Stiwdio: Sin City
- Allweddair: vampire, group sex, straight
- Cyfarwyddwr: Michael Raven
- Cast: Ava Vincent, Asia Carrera, Ryan Conner, Diana DeVoe, April Flowers, Jessica Drake
