Islam in Austria is the largest minority religion in the country, practiced by 7.9% of the total population in 2016 according to the Austrian Academy of Sciences. The majority of Muslims in Austria belong to the Sunni denomination. Most Muslims came to Austria during the 1960s as migrant workers from Turkey and Yugoslavia. There are also communities of Arab and Afghan origin.

Islam is the majority religion in Azerbaijan, but the country is considered to be the most secular in the Muslim world. Various reports have estimated 97.3% or 99.2% of the population identifying as Muslim; with the majority being adherents of the Shia branch (55-65%), while a significant minority (35-45%) are Sunnis. Traditionally, the differences between these two branches of Islam have not been sharply defined in Azerbaijan.