Islam in Australia

Islam is the second-largest religion in Australia. According to the 2021 Census in Australia, the combined number of people who self-identified as Australian Muslims, from all forms of Islam, constituted 813,392 people, or 3.2% of the total Australian population. That total Muslim population makes Islam, in all its denominations and sects, the second largest religious grouping in Australia, after all denominations of Christianity (43.9%, also including non-practising cultural Christians).

Demographers attribute Muslim community growth trends during the most recent census period to relatively high birth rates, and recent immigration patterns. Adherents of Islam represent the majority of the population in Cocos (Keeling) Islands, an external territory of Australia.

The vast majority of Muslims in Australia are Sunni, with significant minorities belonging to the Shia denomination. The followers of each of these are further split along different Madhhab (schools of thought within Islamic jurisprudence for the interpretation and practice of Islamic law) and sub-sect. There are also practitioners of other smaller denominations of Islam such as Ibadi Muslim Australians of Omani descent, and approximately 20,000 Druze Australians whose religion emerged as an offshoot of Islam which arrived in Australia with the immigration of Druze mainly from Lebanon and Syria. There are also Sufi (Islamic mysticism) minorities among Muslim practitioners in Australia.

While the overall Australian Muslim community is defined largely by a common religious identity, Australia's Muslims are not a monolithic community.