A Dark creature with the appearance of a woman with floor-length black hair and a skeletal, green-tinged face. Its screams will kill.
- Seamus Finnigan is particularly afraid of banshees, as this is the form his boggart took (PA7).
- The Bandon Banshee was supposedly defeated by Gilderoy Lockhart (CS6) but was actually defeated by a witch with a hairy chin (CS16).
- The singer Celestina Warbeck performs with a backing group of banshees (DP4)
- The screeching sound of the Golden Egg reminded Seamus of a banshee (GF21)