Hydarnes (peo||Vidṛna), also known as Idernes, was a Persian nobleman, who was active during the reign of Darius II . He was a descendant (perhaps grandson) of Hydarnes the Younger, who was himself the son of Hydarnes, one of the seven Persian conspirators who overthrew the Pseudo-Smerdis. He was the father of several children through his principal consort. His offspring included Tissaphernes, Terituchmes, Stateira, Rhoxane, and two further daughters.