Picnic at Hanging Rock is an Australian historical fiction novel by Joan Lindsay. The novel, set in 1900, is about a group of female students at an Australian girls' boarding school who vanish at Hanging Rock while on a Valentine's Day picnic, and the effects the disappearances have on the school and local community. The novel was first published in 1967 in Australia by Cheshire Publishing and was reprinted by Penguin in 1975. It is widely considered by critics to be one of the greatest Australian novels. In 2022, it was included on the "Big Jubilee Read" list of 70 books by Commonwealth authors, selected to celebrate the Platinum Jubilee of Elizabeth II.

Joan à Beckett Weigall, Lady Lindsay was an Australian novelist, playwright, essayist, and visual artist. Trained in her youth as a painter, she published her first literary work in 1936 at age forty under a pseudonym, a satirical novel titled Through Darkest Pondelayo. Her second novel, Time Without Clocks, was published nearly thirty years later, and was a semi-autobiographical account of the early years of her marriage to artist Sir Daryl Lindsay.