Ramandu's daughter, also known as Lilliandil in the 2010 film version of The Voyage of the Dawn Treader, is a fictional character from The Chronicles of Narnia by C. S. Lewis. Introduced in the 1952 book The Voyage of the Dawn Treader, she aids Caspian X and the crew of Dawn Treader to break an enchantment on three of the Seven Great Lords of Narnia. Eventually she becomes Queen of Narnia, after marrying Caspian X, and bears his son, Rilian. In the 1953 novel The Silver Chair, the Lady of the Green Kirtle, in the form of a snake, kills her though she later reappears in the 1956 book The Last Battle. The character appears in adaptations of the book series; the television serial The Chronicles of Narnia, where she is portrayed by Gabrielle Anwar, and The Chronicles of Narnia film series, where Laura Brent plays the role.

The Lady of the Green Kirtle, also called Queen of Underland and Queen of the Deep Realm, is the main antagonist in The Silver Chair by C. S. Lewis. She enslaved Prince Rilian of Narnia and a horde of gnomes by her witchcraft, and planned to use them to take over Narnia. She is foiled by three friends of Aslan: Eustace Scrubb, Jill Pole, and Puddleglum, and is finally killed by Rilian.