Dilmun (sometimes transliterated Telmun) is a land mentioned by Mesopotamian civilizations as a trade partner, a source of the metal copper, and an entrepôt of the Mesopotamia-to-Indus Valley Civilization trade route.

Although the exact location of Dilmun is unclear, it might be associated with the islands of Bahrain, the Eastern Province of Saudi Arabia, Qatar, Oman and nearby Iranian coast in the Persian Gulf