Caliph/Khalifah is the title for the Islamic leader of the Ummah, with temporal and spiritual authority over the community of Islam - the word literally means "one who replaces someone else who left or died". The title has been defunct since the abolition of the Ottoman Sultanate in 1924.

Caliphate/Khilafah historically describes the succession of rulers following the Prophet Muhammad, the passing of the title from generation to the next, excluding the prophetic aspect of Muhammad's role.

A number of modern renewal movements in Islam, prominently (but not exclusively) Hizb-ut-Tahreer, seek to re-establish the institution, a single office whose occupant, as successor to Muhammad, would possess clear political, military, and legal standing as the global leader of the Muslims.
Please submit sites of organisations and groups working for the re-establishment of the Khilafah.

more information (editors only)

This category lists some of the groups within the Muslim Ummah who are working for the re-establishment of the Khilafah (Islamic State).
Please submit sites of organisations and groups working for the re-establishment of the Khilafah.