Hydarnes (Old Persian: 𐎻𐎡𐎭𐎼𐎴, romanized: Vidṛna), also known as Idernes, was a Persian nobleman, who was active during the reign of Darius II (r. 423 – 404 BC). 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 Stateira and Teritoukhmes.^[1]