Oman is the only country in the world with an Ibadi Muslim establishment — a branch of Islam that is neither Sunni nor Shia and that survives in numbers only here, on the Tunisian island of Djerba and in the M'zab valley of Algeria. Among Omani citizens, Ibadis are the largest group, with substantial Sunni and smaller Shia communities; among the total population, which is close to half expatriate, there are also large Hindu, Christian and Buddhist minorities. The state's explicit policy is to keep all of this unlabelled.
Where Ibadism Came From
Ibadism emerged in the seventh century from the earliest schism in Islam, the dispute over who should lead the community after the Prophet's death. It developed within the broad Kharijite milieu — those who rejected both the claim of Ali's partisans and the Umayyad settlement — but separated decisively from the militant wing, refusing the doctrine that other Muslims could be declared unbelievers and killed.
The school takes its name from Abdullah ibn Ibad, a Basran figure of the late seventh century, though Omani Ibadis generally regard Jabir ibn Zayd, an Omani scholar of the same period, as the real founder. Persecuted in Iraq, the movement's adherents carried it to the peripheries of the Islamic world — Oman, North Africa and later East Africa — which is exactly where it survived.
What Ibadis Believe Differently
The distinctions from Sunni Islam are real but narrower than the separate identity suggests. The core of the faith, the five pillars, the Quran and the prophetic mission are shared.
Where Ibadism diverges is principally on leadership and on some questions of theology. The imam is chosen by the community for piety and competence, and may be deposed if he fails; there is no hereditary principle and no requirement of descent from the Prophet or from Quraysh. Ibadi theology holds the Quran to be created rather than eternal, and denies that the faithful will see God directly in the afterlife — positions that put it closer to some early rationalist currents than to later Sunni orthodoxy.
In practice Ibadi worship looks unremarkable to a Sunni visitor. Historically the community also practised kitman, the concealment of religious identity under hostile rule, which contributed to its reputation for discretion.
The Imamate, and the Inland Capital
For most of its history Oman was governed by elected Ibadi imams, and Nizwa in the interior was the imamate's principal centre — a town of date gardens, a fort and a religious scholarly tradition that treated the coast with some suspicion.
That division between an inland imamate, religious and austere, and a coastal sultanate, commercial and outward-facing, is the structural fact of Omani history. The coast traded across the Indian Ocean, ruled Zanzibar and much of the East African coast, and dealt with European powers; the interior elected imams and kept its distance.
The War That Ended the Imamate
The two were formally reconciled by the Treaty of Seeb in 1920, which gave the interior effective autonomy under the imam while the sultan ruled the coast. The arrangement broke down in the 1950s, when the prospect of oil in the interior made the division intolerable to the sultanate and its British backers.
The Jebel Akhdar War of 1954 to 1959 ended with the defeat of the imamate forces, who had held the high plateau, and with the imam in exile. The office has not been revived. Since then the Sultan has held both temporal and religious authority, a fusion that had no precedent in Ibadi doctrine and that removed the community's mechanism for removing a bad ruler.
Qaboos, and the Policy of Not Asking
Sultan Qaboos bin Said, who took power in 1970 and ruled until his death in 2020, made religious non-sectarianism a deliberate state policy in a region where sectarian identity became increasingly politicised.
Mosques in Oman are not designated Ibadi, Sunni or Shia. Sermons are coordinated through the Ministry of Endowments and Religious Affairs, and content that emphasises sectarian difference is not permitted. Omanis are not asked their school of law on official forms. Grand Mufti Ahmed bin Hamad al-Khalili has been a prominent voice against sectarian polemic, arguing that the Ibadi position of refusing to excommunicate other Muslims is a resource for the whole region.
This has foreign policy consequences. Oman maintained relations with Iran throughout the period when its Gulf neighbours did not, declined to join the blockade of Qatar and the war in Yemen, and hosted the secret talks that produced the Iran nuclear negotiations. A state whose establishment belongs to neither major branch of Islam has a structural reason to be the room where the others meet.
A Mosque Built to Be Nobody's Sect
The Sultan Qaboos Grand Mosque in Muscat, opened in 2001, holds around twenty thousand worshippers. Its main prayer hall contains a single-piece hand-woven Persian carpet of more than four thousand square metres, which took hundreds of weavers years to complete and weighs over twenty tonnes, and a chandelier of Swarovski crystal and gold plate.
Architecturally it is deliberately eclectic, drawing on Omani, Persian, Mughal and Egyptian traditions rather than asserting one. Non-Muslim visitors are welcome outside prayer times, with dress requirements, and the site includes an Islamic information centre aimed at explaining Oman's tradition to outsiders — a function Omani institutions take seriously, since almost no visitor arrives knowing what Ibadism is.
Churches on Land the Sultan Gave
Oman's Christian population is almost entirely expatriate — Indian, Filipino, Arab, Western — and worships in churches built on land granted by the state. The Protestant Church in Oman operates compounds at Ruwi and Ghala in Muscat, the Catholic Church has parishes at Ruwi, Sohar and Salalah, and the compounds are shared by dozens of congregations worshipping in many languages on a rota that runs through the week.
The Protestant presence has a longer history than the expatriate boom. The Reformed Church in America's Arabian Mission established a hospital in Muscat in the 1890s that operated for decades and was the principal source of modern medicine in the country before 1970.
The limits are clear and consistently applied: worship takes place on designated sites, proselytising Muslims is prohibited, and religious materials aimed at conversion are not permitted. Within those limits, provision is generous by regional standards.
A Hindu Temple Older Than the Modern State
Muscat's Shiva temple at Muttrah, the Motishwar Mandir, has been in use for roughly two centuries, serving a Gujarati Bhatia merchant community whose presence in Oman predates it further still. A Krishna temple operates nearby.
These are not expatriate facilities of recent vintage but the religious buildings of families who have traded from Muscat for generations and some of whom hold Omani citizenship. Their existence, in a Gulf state, is the single most striking illustration of how the country's commercial history shaped its religious policy: Oman's rulers needed Indian Ocean merchants, and merchants needed temples.
Zanzibar, and Ibadism in Africa
From the seventeenth century Omani rulers expelled the Portuguese from the East African coast and built a maritime empire; in 1840 Said bin Sultan moved his capital to Zanzibar, so that for a period Oman was governed from an island off Tanzania.
The empire carried Ibadism to East Africa and left an Omani-descended population there, and it also made Zanzibar a centre of the clove trade and of the Indian Ocean slave trade, a history that ended in the violence of the 1964 revolution and the flight of much of the Omani-Arab population, many of whom returned to Oman. The Swahili spoken by some older Omani families is a direct legacy.
The Lines That Are Still Drawn
Tolerance in Oman is real and it is bounded. Apostasy is not a criminal offence in the penal code, but Islamic personal status law governs marriage, custody and inheritance for Muslims, and a Muslim who leaves the faith faces consequences in those courts as well as within the family. Proselytising a Muslim is prohibited, and the 2018 penal code strengthened penalties for religious gatherings held outside authorised premises and for material deemed to insult religion.
The state's framework is therefore best described as managed pluralism rather than religious freedom in the liberal sense. Communities are accommodated generously so long as they remain within their own boundaries and do not recruit across them — an arrangement that has produced genuine social peace and that leaves individual Omanis with fewer options than their expatriate neighbours.
Job's Tomb and the Frankincense Coast
Dhofar, the southern governorate, holds the sites that connect Oman to a much older religious geography. The tomb of Nabi Ayyub — Job — sits in the hills above Salalah and is a place of pilgrimage; a tomb attributed to the prophet Imran lies in the town itself and is unusually long.
Dhofar was also the principal source of frankincense for the ancient world, traded to Egypt, Israel, Greece and Rome for use in temple ritual, and the Land of Frankincense sites — the trees of Wadi Dawkah, the caravan oasis of Shisr and the ports of Khor Rori and Al Baleed — are inscribed by UNESCO. A substantial part of the ritual apparatus of the ancient Mediterranean ran on a resin harvested here.
Oman therefore offers an unusual combination: a distinctive and little-known branch of Islam, a state that refuses to label its own citizens by sect, and a religious history reaching back to the incense trade. Oman in the round is our Oman country guide; our Middle East countries guide sets it beside its neighbours, and where Oman is starts from the map.
