Wadi Musa (Arabic: وادي موسى, literally "Valley of Musa (AS)) is a town located in the Ma'an Governorate in southern Jordan. It is the administrative center of the Petra Department and the nearest town to the archaeological site of Petra, being only 3.5 km (2.2 miles) away. Most of the locals belong to the Liyathnah tribe. It hosts many hotels and restaurants for tourists, and the important B'doul settlement of Umm Seyhoun, created after the community's forced displacement in 1985, is approximately 2 kilometres (1 mi) from the town.

Wadi Musa means "Valley of Moses" in Arabic. It is said that Moses passed through the valley and struck water from the rock for his followers at the site of Ain Musa ("Moses Spring" or "Moses' Well"). The Nabateans built channels that carried water from this spring to the city of Petra. Wadi Musa was also nicknamed the "Guardian of Petra". The Tomb of Aaron, the traditional burial site of biblical Aaron, the brother of Moses, is on nearby Jebel Harun, a strong candidate for biblical Mount Hor.

During the Crusader period, the area was part of the Lordship of Oultrejordain and was defended by the castle, li Vaux Moysi.

During the Arab Revolt, Turkish forces under the command of Mehmed Djemal Pasha attacked Wadi Musa on 21 Oct. 1917. The Ottoman forces were defeated by forces under the command of Mawlud Mukhlis, Faisal's aide-de-camp.

The Jordanian census of 1961 found 654 inhabitants in Wadi Musa.

In Wadi Musa, there is a semi-arid climate. Most rain falls in the winter. The Köppen-Geiger climate classification is BSk. The average annual temperature in Wadi Musa is 15.5 °C (59.9 °F). About 193 mm (7.60 in) of precipitation falls annually.

As of 2009, Wadi Musa's population was 17,085, with a male-to-female sex ratio of 52.1 to 47.9 (8,901 males and 8,184 females), making it the most populous settlement of the Petra Department. As of the 2004 census, Petra Department, which includes Wadi Musa and 18 other villages, had a population of 23,840 inhabitants. The population density of the town was 2.3 people per dunam, or 23 inhabitants per hectare (9.3/acre), and the population growth rate was 3.2%.

Most of the town's population belongs to the Liyathnah tribe, whose members play leading roles in the region's economy and politics and dominate the local tourism industry since the 20th century. Almost the entire population is Muslim.

The town is about 250 kilometres (160 mi) from Amman, Jordan's capital, and 100 kilometres (60 mi) north of the port city of Aqaba. With more than 50 hotels and many tourist restaurants, its economy is almost entirely tied to tourism.

The campus of the College of Archaeology, Tourism & Hotel Management of Al-Hussein Bin Talal University is located in Wadi Musa.

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  Wadi Musa Valley
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  Petra Visitors Center
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  Townscape
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  Houses in Wadi Musa
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  Wadi Musa at dusk
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  Moses source
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  Hotel
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  Mountains

• Photos of Wadi Musa at the American Center of Research
• Photos of Wadi Musa at the Manar al-Athar photo archive