Valya Harkonnen

Valya Harkonnen is a fictional character in the 2024 HBOscience fiction television series Dune: Prophecy, portrayed by Emily Watson. She is the leader of the Sisterhood, a secretive and powerful matriarchal order whose members undergo intense physical training and mental conditioning to obtain superhuman abilities. Set in Frank Herbert's Dune universe, ten thousand years before the events of his 1965 novel Dune, the series follows Valya and her sister, Tula Harkonnen (Olivia Williams), as they combat forces that threaten humanity's future, and shape the Sisterhood's evolution into the Bene Gesserit order.

Valya first appears in the Great Schools of Dune (2012–2016) prequel trilogy of novels by Brian Herbert and Kevin J. Anderson.