Life Praxagoras of Cos (Πραξαγόρας ὁ Κῷος) was a Greek historian of the 4th century BCE, a native of the island of Cos in the southeastern Aegean [1][2][3]. Beyond his name, origin, and profession, no specific biographical details survive.

Works His sole attested work is a history of Athens (Atthis or History of Athens), now lost and preserved only in fragments. It was composed in the Ionic dialect [1][2].

Significance Praxagoras is significant as an early Atthidographer, a local historian of Athens. His work is cited by later authors like Plutarch, who used it as a source for his Life of Theseus [1][3]. Alongside other Atthidographers, he helped preserve Athenian traditions and constitutional history, influencing broader historical narratives [1].

Sources 1. Oxford Research Encyclopedia of Classics: https://oxfordre.com/classics/view/10.1093/acrefore/9780199381135.001.0001/acrefore-9780199381135-e-5270 2. Perseus Digital Library, Smith's Dictionary of Greek and Roman Biography and Mythology: http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.04.0104%3Aentry%3Dpraxagoras-bio-1 3. ToposText: https://topostext.org/people/1410