Ceremonia sangrienta
- Taon: 1973
- Bansa: Italy, Spain
- Genre: Horror
- Studio: Luis Film, X Films
- Keyword: vampire, paranoia, castle, murder, blood bath, gothic horror
- Direktor: Jorge Grau
- Cast: Lucia Bosè, Espartaco Santoni, Ewa Aulin, Ana Farra, Silvano Tranquilli, Lola Gaos