Bargylus (Ancient Greek: Βάργυλος) was a figure in ancient Greek mythology.
He was a friend of Bellerophon, who was killed by Bellerophon's horse, Pegasus. In commemoration of this, Bellerophon was said to have given a town in Caria the name Bargylia (modern Boğaziçi). We have today some ancient coins of Bargylia that feature Pegasus to commemorate this myth.
This article incorporates text from a publication now in the public domain: Schmitz, Leonhard (1870). "Bargylus". In Smith, William (ed.). Dictionary of Greek and Roman Biography and Mythology. Vol. 1. p. 463.