Oman, officially the Sultanate of Oman, is a country in the southeastern Arabian Peninsula in West Asia. It shares land borders with Saudi Arabia, the United Arab Emirates, and Yemen, while also sharing maritime borders with Iran and Pakistan. Oman's coastline faces the Arabian Sea to the southeast and the Gulf of Oman on the northeast. The exclaves of Madha and Musandam are surrounded by the United Arab Emirates on their land borders, while Musandam's coastal boundaries are formed by the Strait of Hormuz and the Gulf of Oman. It has a population of approximately 5.46 million and an area of 315,331 km2 (121,750 sq mi). Muscat is the capital and largest city and Islam is the state religion.
Oman is the oldest independent state in the Arab world, and has been continuously ruled by the Al Bu Said dynasty since 1744. Beginning in the 17th century, Oman became a regional power with an empire that competed with the Portuguese Empire and British Empire for influence in the Persian Gulf and the Indian Ocean. At its peak in the 19th century, Omani influence and control extended across the Strait of Hormuz to what later became Iran and Pakistan, and as far south as Zanzibar. In the 20th century, Oman came under the influence of the British Empire while de jure remaining sovereign.
Oman's oil reserves are ranked as the 22nd largest globally. In 2010, the United Nations Development Programme recognised Oman as the most improved country in the world in terms of development during the preceding 40 years. Less reliant on fossil fuels than other Persian Gulf states, a portion of Oman's economy involves tourism, and trade of fish, dates and other agricultural produce. The World Bank classifies Oman as a high-income economy. As of 2024, Oman ranks as the 42nd most peaceful country in the world in the Global Peace Index.
Oman is an absolute monarchy ruled by a sultan, with power passed down through the male line. Qaboos bin Said served as sultan from 1970 until his death in 2020. His reign marked the beginning of the Omani Renaissance, which saw a rise in the country's living standards, the abolition of slavery, the end of the Dhofar Rebellion, and the promulgation of Oman's constitution. In 2020, Haitham bin Tariq succeeded Qaboos as the Sultan of Oman. Oman is a member of the United Nations, the Arab League, the Gulf Cooperation Council, the Non-Aligned Movement, and the Organisation of Islamic Cooperation.
The oldest known written mention of "Oman" is found on a tomb in the Mleiha Archeological Center in the United Arab Emirates, dated to around 220 BCE, where it is written as 𐩲𐩣𐩬 in Ancient South Arabian and 𐡏𐡌𐡍 in Aramaic.
The name "Oman" is believed to predate Pliny the Elder's reference to "Omana" and Ptolemy's reference to "Omanon". (Ὄμανον ἐμπόριον in Greek).
Beginning in the 19th century, most writers localised Omana with Sohar.. This changed, however, with the advent of archaeology .
The city or region is commonly etymologised in Arabic as deriving from ʿāmin or ʿamūn, meaning 'settled' people, in contrast to the nomadic Bedouins. While some theories propose an eponymous founder—such as Oman bin Ibrahim al-Khalil, Oman bin Siba' bin Yaghthan bin Ibrahim, and Oman bin Qahtan—others suggest that "Oman" originates from a valley in Ma'rib, Yemen. This valley is presumed to be the ancestral homeland of the Azd, an ancient Bedouin tribe mentioned in pre-Islamic inscriptions, particularly in Sabaic inscriptions from the reign of Sha'r Awtar (210–230 CE).
Oman has been known by other names. The ancient Sumerians and the Mesopotamians called it "Magan", a reference to the Magan civilisation, while the Persians called it Mazun, derived from the word "Muzn", meaning clouds and abundant flowing water, which explains the establishment and prosperity of agriculture in Oman since ancient times and the stability and civilisation that accompanied it. The name "Oman" is mentioned in Arabic sources as an independent region. Al-Istakhri and Ibn Hawqal referred to this in their sayings: "Oman is a region with independent regions with spacious people". Ibn Khaldun was more explicit in his definition of Oman. He mentioned it among the Arab regions that emerged as independent states in the Arabian Peninsula, namely Yemen, the Hijaz, Hadhramaut, Ash Shihr, and Oman. He described its system of government, saying that it was a "sole sultanic region."
Al Aybut Al Awal, in the Dhofar Governorate of Oman, a site was discovered in 2011 containing more than 100 surface scatters of stone tools, belonging to a regionally specific African lithic industry—the late Nubian Complex—known previously only from the northeast and Horn of Africa. Two optically stimulated luminescence age estimates place the Arabian Nubian Complex at 106,000 years old. This supports the proposition that early human populations moved from Africa into Arabia during the Late Pleistocene.
In recent years surveys have uncovered Palaeolithic and Neolithic sites on the eastern coast. Main Palaeolithic sites include Saiwan-Ghunaim in the Barr al-Hikman. Archaeological remains are particularly numerous for the Bronze Age Umm an-Nar and Wadi Suq periods. At the archaeological sites of Bat, Al-Janah, and Al-Ayn wheel-turned pottery, hand-made stone vessels, metals industry artifacts, and monumental architecture have been preserved.
Sumerian tablets referred to Oman as "Magan" and in the Akkadian language "Makan", a name that links Oman's ancient copper resources. This is a clear reference to the Magan civilisation, an ancient region in what is now modern day Oman and United Arab Emirates, which was referred to in Sumerian cuneiform texts of around 2300 BCE and existed until 550 BCE as a source of copper and diorite for Mesopotamia.
Iron Age to pre-Islamic period
During the 8th century BCE, it is believed that the Yaarub, the descendant of Qahtan, ruled the entire region of Yemen, including Oman. Wathil bin Himyar bin Abd-Shams (Saba) bin Yashjub (Yaman) bin Yarub bin Qahtan later ruled Oman. It is thus believed that the Yaarubah were the first settlers in Oman from Yemen.
In the 1970s and 1980s, scholars like John C. Wilkinson believed by virtue of oral history that in the 6th century BCE, the Achaemenids exerted control over the Omani peninsula, most likely ruling from a coastal centre such as Suhar. The northern half of Oman was presumably was part of the Maka satrapy of the Persian Achaemenid Empire. By the time of the conquests of Alexander the Great, the satrapy may have existed in some form.
Central Oman has its own indigenous Samad Late Iron Age cultural assemblage named eponymously from Samad al-Shan. In the northern part of the Oman Peninsula the Recent Pre-Islamic Period begins in the 3rd century BCE and extends into the 3rd century CE. Whether or not Persians brought south-eastern Arabia under their control is a moot point, since the lack of Persian archaeological finds speak against this belief. Armand-Pierre Caussin de Perceval suggests that Shammir bin Wathil bin Himyar recognised the authority of Cyrus the Great over Oman in 536 BCE.
The Omani Kingdom was subdued by the Sasanian Empire's forces under Vahrez during the Aksumite–Persian wars. The 4,000-strong Sasanian garrison was headquartered at Jamsetjerd/Jamshedgird (modern Jebel Gharabeh, also known as Felej al-Sook)
Over centuries, From the 2nd half of the 1st millennium BCE, waves of Semitic speaking peoples migrated from central and western Arabia to the east. The most important of these migrating tribes are known as Azd. they made a living by fishing, farming, herding or stock breeding. Further, many present-day Omani families trace their ancestral roots to other parts of Arabia. Arab migration to Oman started from northern-western and south-western Arabia and those who chose to settle had to compete with the indigenous population for the best arable land. When Arab tribes started to migrate to Oman, there were two distinct groups. One group, a segment of the Azd tribe migrated from Yemen in 120/200 CE following the collapse of Marib Dam, while the other group migrated a few centuries before the birth of Islam from Nejd (present-day Saudi Arabia), named Nizari. Other historians believe that the Yaarubah from Qahtan, which belong to an older branch, were the first settlers of Oman from Yemen, and then came the Azd.