Agias or Hagias was an ancient Greek poet, whose name was formerly written Augias through a mistake of the first editor of the Excerpta of Proclus. This misreading was corrected by Friedrich Thiersch, from the Codex Monacensis, which in one passage has "Agias", and in another "Hagias". The name itself does not occur in early Greek writers, unless it be supposed that the "Egias" or "Hegias" in Clement of Alexandria and Pausanias, are only different forms of the same name.
Agias was a native of Troezen, and the time at which he wrote appears to have been about the year 740 BC. His poem was celebrated in antiquity, under the name of Nostoi , i.e. the history of the return of the Achaean heroes from Troy, and consisted of five books. The poem began with the cause of the misfortunes which befell the Achaeans on their way home and after their arrival, that is, with the outrage committed upon Cassandra and the Palladium; and the whole poem filled up the space which was left between the work of the poet Arctinus and the Odyssey. The ancients themselves appear to have been uncertain about the author of this poem, for they refer to it simply by the name of Nostoi, and when they mention the author, they only call him "the writer of the Nostoi" . Hence some writers attributed the Nostoi to Homer, while others call its author a Colophonian. Similar poems, and with the same title, were written by other poets also, such as Eumelus of Corinth, Anticleides of Athens, Cleidemus, and Lysimachus of Alexandria. Where the Nostoi is mentioned without a name, it was generally understood to have been the work of this Agias.
Agias ( Gr. ) can refer to a number of people from classical history:
- Agias, an epic poet from the 8th century BC
- Agias of Sparta, an ancient seer
- Agias, a comic writer mentioned briefly by ancient writers, but otherwise unknown
- Agias, the author of a work on Argolis, the Argolica , according to Athenaeus (iii). He is called a musician in another passage (xiv) but this may be a different person.