Cassandra is a given name that can refer to:
- Cassandra Trelawney, great-great-grandmother of Sybill Trelawney and a celebrated Seer
- Cassandra Vablatsky, author of Unfogging the Future
Cassandra is generally taken to mean "she who entangles men". This meaning came from the Greek culture and was translated to mean various other things as well.
In Greek mythology; Cassandra was the daughter of King Priam and Queen Hecuba of Troy. She was blessed with the gift of Apollo, but after desregrading him - she was doomed to never be believed, no matter what she told anyone. After the downfall of Troy, she was taken away by the Greek warrior Agamenmnon but was murdered by his jealous wife; Clytemnestra.