El Horla es un relato corto de terror de Guy de Maupassant, publicado originalmente el 23 de octubre de 1882, en el periódico Le Gaulois. Escrito en forma de diario, narra los síntomas y miedos del personaje principal cuando empieza a sentir la presencia de un ser invisible, llamado el Horla, que lo rodea y lo controla. Cada noche, mientras duerme, esta presencia lo invade y bebe su vida.
Henri René Albert Guy de Maupassant was a popular 19th-century French writer. He is one of the fathers of the modern short story. A protege of Flaubert, Maupassant's short stories are characterized by their economy of style and their efficient effortless dénouement. He also wrote six short novels. A number of his stories often denote the futility of war and the innocent civilians who get crushed in it - many are set during the Franco-Prussian War of the 1870s.