Ancient Rhodian coinage refers to the coinage struck by an independent Rhodian polity during Classical and Hellenistic eras. The Rhodians also controlled territory on neighbouring Caria that was known as Rhodian Peraia under the islanders' rule. However, many other eastern Mediterranean states and polities adopted the Rhodian (Chian) monetary standard following Rhodes. Coinage using the standard achieved a wide circulation in the region. Even the Ptolemaic Kingdom, a major Hellenistic state in the eastern Mediterranean, briefly adopted the Rhodian monetary standard.