Ariarathes II (Ancient Greek: Ἀριαράθης, Ariaráthēs; ruled 301–280 BC), satrap and king of Cappadocia, son of Holophernes, fled into Armenia after the death of his uncle and adopted father Ariarathes I, ruler of Cappadocia. After the death of Eumenes he recovered Cappadocia with the assistance of Ardoates, the Armenian king, and killed Amyntas, the Macedonian satrap, in 301 BC, but was forced to accept Seleucid suzerainty. He was succeeded by Ariamnes, the eldest of his three sons.
This article incorporates text from a publication now in the public domain: Smith, William, ed. (1870). "Ariarathes II". Dictionary of Greek and Roman Biography and Mythology. 1. p. 284.