Ceremonia sangrienta
- Tahun: 1973
- Negara: Italy, Spain
- Genre: Horror
- Studio: Luis Film, X Films
- Kata kunci: vampire, paranoia, castle, murder, blood bath, gothic horror
- Pengarah: Jorge Grau
- Pelakon: Lucía Bosè, Espartaco Santoni, Ewa Aulin, Ana Farra, Silvano Tranquilli, Lola Gaos