Babrius (Greek: Βάβριος, Bábrios; fl. c. 2nd century),[1] also known as Babrias (Βαβρίας) or Gabrias (Γαβρίας),[2] was the author of a collection of Greek fables,[2] many of which are known today as Aesop's Fables.

Practically nothing is known of him. He is supposed to have been a Hellenized Roman, whose original name may have been Valerius. He lived in the East, probably in Syria, where the fables seem first to have gained popularity. The address to "a son of King Alexander" has caused much speculation, with the result that dates varying between the 3rd century BC and the 3rd century AD have been assigned to Babrius. The Alexander referred to may have been Alexander Severus (AD 222–235), who was fond of having literary men of all kinds about his court. "The son of Alexander" has further been identified with a certain Branchus mentioned in the fables, and it is suggested that Babrius may have been his tutor; probably, however, Branchus is a purely fictitious name. There is no mention of Babrius in ancient writers before the beginning of the 3rd century AD. As appears from surviving papyrus fragments, his work is to be dated before c. 200 AD (and probably not much earlier, for his language and style seem to show that he belonged to that period)