Piyamaradu (also spelled Piyama-Radu, Piyama Radu, Piyamaradus, Piyamaraduš) was a warlord mentioned in Hittite documents from the middle and late 13th century BC.
[2] Piyamaradu's renegade activities are remarkable for their duration, having spanned at least 35 years,[3] during which time he posed a considerable threat to three Hittite kings: Muwatalli II, Hattusili III, and Tudhaliya IV.
[5] His attacks and raids in Western Anatolia on the Hittite vassal states of Arzawa, Seha, Lazpa (Lesbos) and Wilusa (Troy) have been interpreted as an attempt to reassert his own dynastic claim.
Piyamaradu turned for support to the Great King of Ahhiyawa (Achaea, i.e. Mycenean Greece), and married his daughter to Atpa, the vassal ruler of Millawanda (Miletus).
[7] Konstantinos Kopanias also suggests that Greek oral tradition remembering Piyamaradu's exploits served as the basis for later stories about Achilles in the Epic Cycle.