(The Strait of Hormuz) is a strait between the Arabian Gulf and the Gulf of Oman. It provides the only sea passage from the Arabian Gulf to the open ocean and is one of the world's most strategically important choke points. On the north coast lies Iran, and on the south coast the United Arab Emirates and Musandam, an exclave of Oman. The strait is about 90 nautical miles (167 km) long, with a width varying from about 52 nautical miles (96 km) to 21 nautical miles (39 km).

A third of the world’s liquefied natural gas and almost 20% of total global oil consumption passes through the strait, making it a highly important strategic location for international trade.

In the 10th–17th centuries AD, the Kingdom of Ormus, which seems to have given the strait its name, was located here. Scholars, historians and linguists derive the name "Ormuz" from the local Persian word (Hur-mogh) meaning date palm. In the local dialects of Hormuz and Minab, this strait is still called Hurmogh and has the aforementioned meaning. The resemblance of this word with the name of the Zoroastrian god Hormoz (a variant of Ahura Mazda) has resulted in the popular belief that these words are related.

Jodocus Hondius labels the Strait Basora fretum ("Strait of Basra") on his 1606 map of the Ottoman Empire.

To traverse the Strait, ships pass through the territorial waters of Iran and Oman under the transit passage provisions of the United Nations Convention on the Law of the Sea.

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