Babrius the Fabulist was a Greek author of the 2nd century CE. His life is obscure, but internal evidence suggests a connection to a Hellenistic royal court, as he dedicated his work to a "Branchus," possibly the son of a king Alexander. He may have been a Hellenized Roman, though this remains conjecture.

His major work is the Mythiamboi, a two-book collection of approximately 144 Aesopic fables composed in choliambic verse. These fables adapt the traditional prose corpus into a distinctive poetic form, though the surviving text is fragmentary.

Babrius holds significance as the earliest known versifier of Aesopic fables in Greek, marking a key stage in the tradition's literary adaptation. His work was influential for later writers like Avianus. It was rediscovered in the 19th century via a manuscript from Mount Athos, which preserved his vivid, colloquial poetic style.