Tula Harkonnen

Tula Harkonnen is a fictional character in the 2024 HBO science fiction television series Dune: Prophecy, portrayed by Olivia Williams. She is a Reverend Mother 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 Tula and her sister, Valya Harkonnen (Emily Watson), as they combat forces that threaten humanity's future, and shape the Sisterhood's evolution into the Bene Gesserit order.

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