Panyasis (more correctly, Panyassis) was a native of Halicarnassus, and probably the maternal uncle of Herodotus.
We do not know what impression the poems of Panyasis made upon his contemporaries and their immediate descendants, but it was probably not great, since he is not mentioned by any of the great Greek writers.
Panyasis occupied an intermediate position between the later cyclic poets and the studied efforts of Antimachus, who is stated to have been his pupil.
He had a brother Theodore, and an uncle or cousin Panyasis, the epic poet, a personage of so much importance that the tyrant Lygdamis, suspecting him of treasonable projects, put him to death.
Herodotus may thus have had his thoughts turned to literature as furnishing a not unsatisfactory career, and may well have been encouraged in his choice by the example of Panyasis, who had already gained a reputation by his writings when Herodotus was still an infant.
At any rate it is clear from the extant work of Herodotus that he must have devoted himself early to the literary life, and commenced that extensive course of reading which renders him one of the most instructive as well as one of the most charming of ancient writers.