The Sybil of Dibella is a prophetess or leader of the Cult of Dibella. She is in constant direct contact with their Goddess Dibella and through her the cult knows the mind/will of their god. If the Sybil dies, a new Sybil of Dibella is revealed through a ritual, called the "Exhalted Protocol of Dibellan Sybil."
- The title bears resemblance to one held by several ancient Greek prophetesses, although with a different spelling: Sibyl.
- The Sybils of Dibella are also reminiscent of the real life Nepali Kumari, young girls brought away from their families to live in a temple and serve as the vessel of a goddess.