She: A History of Adventure, is a Gothic novel by the English writer H. Rider Haggard, published in book form in 1887 following serialisation in The Graphic magazine between October 1886 and January 1887. She was extraordinarily popular upon its release and has never been out of print.

The story is a first-person narrative which follows the journey of Horace Holly and his ward Leo Vincey to a lost kingdom in the African interior. They encounter a native people and a mysterious white queen named Ayesha who reigns as the all-powerful "She" or "She-who-must-be-obeyed". Haggard developed many of the conventions of the lost world genre which countless authors have emulated.