Philaretus (Φιλάρετος, Philáretos) was a medical writer to whom a version of De pulsibus ad Antonium, a Greek treatise on the pulse is attributed.
His name is associated only with a Byzantine revision of the text, probably from the ninth century AD.
The treatise belongs to the Galenic tradition and is influenced by the Pheumismatists.
By the eleventh century, a Latin translation was known at the medical school in Salerno.
Included in the Articella compendium, it became one of the basic medical handbooks of the western Middle Ages.