Atlantida (French: L'Atlantide) is a fantasy novel by French writer Pierre Benoit, published in February 1919. It was translated into English in 1920 as Atlantida. L'Atlantide was Benoit's second novel, following Koenigsmark, and it won the Grand Prize of the French Academy. The English translation of Atlantida was first published in the United States as a serial in Adventure magazine.
It is 1896 in the French Algerian Sahara. Two officers, André de Saint-Avit and Jean Morhange investigate the disappearance of their fellow officers. While doing so, they are drugged and kidnapped by a Targui warrior, the procurer for the monstrous Queen Antinea.
Pierre Benoit (16 July 1886 – 3 March 1962) was a French novelist, screenwriter and member of the Académie française. He is perhaps best known for his second novel L'Atlantide (1919) that has been filmed several times.