Elephantis (fl. late 1st century BC) was a Greek poet and physician apparently renowned in the classical world as the author of a notorious sex manual. Due to the popularity of courtesans taking animal names in classical times, it is likely Elephantis is two or more persons of the same name. None of her works have survived, though they are referenced in other ancient texts.
According to Suetonius, the Roman Emperor Tiberius took a complete set of her works with him when he retreated to his resort on Capri.