The Imamate of Oman (Arabic: إِمَامَة عُمَان, romanised: Imāmat ʿUmān) was several succession of states within the Oman proper (Arabic: عُمَان ٱلْوُسْطَى, romanised: ʿUmān al-Wusṭā, lit. 'Central Oman') in the Hajar Mountains, part of the present-day Sultanate of Oman. The capital of the Imamate alternated historically between Rustaq and Nizwa. The Imamate's territory extended north to Ibri and south to the Alsharqiyah region and the Sharqiya Sands. The Imamate was bounded in the east by the Hajar Mountains and in the west by the Rub' al Khali (Empty Quarter) desert. The Al Hajar Mountains separated the Imamate of Oman from Muscat and Oman. The elected Imam (ruler) resided in the capital, and Walis (governors) represented the Imamate in its different regions.
The Imamate of Oman, similar to the Sultanate of Muscat, was ruled by the Ibadi sect. Imams exercised spiritual and temporal representation over the region. The Imamate is a 1,200-year-old system of government pioneered by the Ibadi religious leaders of Oman, and was based upon the Islamic sharia. The Imamate holds that the ruler should be elected. The imam is considered as the head of the community but tribalism that is part of the Omani society encouraged a decentralised form of governance that would help sustain political unity among the Omanis. The Imamate set out a government system wherein the ruler should not have absolute political nor military power; rather power should be shared with local governors. To prevent local or external threats to the Imamate, the imam had to gather the support of the local communities and tribes to raise a force to fight for a certain cause. The imam needed in-depth understanding of tribal politics and political acumen to maintain political stability within the Imamate when conflicts occurred.
