Elaine is a name shared by several female characters in Arthurian legend, where they can also appear under different names depending on the source. They include Elaine of Astolat and Elaine of Corbenic among others.

Elaine of Astolat, also known as Elayne of Ascolat and other variants of the name, is a figure in Arthurian legend. She is a lady from the castle of Astolat who dies of her unrequited love for Sir Lancelot. Well-known versions of her story appear in Sir Thomas Malory's 1485 book Le Morte d'Arthur, Alfred, Lord Tennyson's mid-19th-century Idylls of the King, and Tennyson's poem "The Lady of Shalott". She should not be confused with Elaine of Corbenic, the mother of Galahad by Lancelot.