Gwaed ar y Sêr
- Yil: 1975
- Mamlakat: United Kingdom
- Janr: Comedy, Horror
- Studiya: Bwrdd Ffilmiau Cymraeg
- Kalit so'z: wales, choir, school, evil child, school choir
- Direktor: Wil Aaron
- Cast: Grey Evans, Hywel Gwynfryn, Dafydd Iwan, Dyfan Roberts, Wynford Elis Owen, Dafydd Hywel